CAP Profiles

Bio

Bio

Professor Cappelli received his B.Sc. degree in Physics (McGill, 1980), and M.A.Sc and Ph.D. degrees in Aerospace Sciences (Toronto, 1983, 1987). He joined Stanford University in 1987 and is currently a Professor in the Department of Mechanical Engineering and Co-Director of the Engineering Physics Program. He carries out research in applied plasma physics with applications to a broad range of fields, including space propulsion, aerodynamics, medicine, materials synthesis, and fusion.

Academic Appointments

Professional Education

  • PhD, University of Toronto, Aerospace Science and Engineering (1987)

Patents

  • Mark Cappelli, Nicolas Gascon, Ronald King. "United States Patent US9145216B2 Unified chemical electric propulsion system", Space Systems Loral, Sep 29, 2015
  • Mark Cappelli. "United States Patent US20110011729A1 Method and apparatus for inductive amplification of ion beam energy", Flavio Poehlmann-Martins, Mark A. Cappelli, Gregory Rieker, Jan 20, 2011
  • William A. Hargus, Jr. Nathan B. Meezan, Mark A. Cappelli. "United States Patent US6525480B1 Low power, linear geometry hall plasma source with an open electron drift", Stanford University, Feb 25, 2003
  • Mark Cappelli. "United States Patent US5417953A Apparatus and method for synthesizing diamond in supercritical water", Stanford University, May 23, 1995
  • Mark Cappelli, Michael Loh. "United States Patent US5358596A Method and apparatus for growing diamond films", Stanford University, Oct 25, 1994

Contact

    • Tel: (650) 723-1745
    Fax: (650) 723-1748
  • Mary Hanrahan Thermosciences Group Administrator
    • Tel: (650) 725-2012

Teaching

2020-21 Courses

Stanford Advisees

Publications

All Publications

  • Energetic neutral particle production in the cathode sheath of direct-current discharges Ito, T., Cappelli, M. A.
  • A Kinetic Study of Electron-Wall Collisions in a Hall Thruster Meezan, N. B., Cappelli, M. A.
  • FURTHER INVESTIGATIONS OF AN OPEN DRIFT HALL THRUSTER WITH BORON NITRIDE AND DIAMOND WALL Gascon, N., Thomas, C., Hermann, W., Cappelli, M., A.
  • Schlieren diagnostic for cinematic visualization of dense plasma jets at Alfvenic timescales EXPERIMENTS IN FLUIDS Underwood, T. C., Loebner, K. K., Miller, V. A., Cappelli, M. A. 2020; 61 (1)

    View details for DOI 10.1007/s00348-019-2848-5

    View details for Web of Science ID 000501312800005

  • Ion plume investigation of a Hall effect thruster operating with Xe/N-2 and Xe/air mixtures JOURNAL OF PHYSICS D-APPLIED PHYSICS Gurciullo, A., Fabris, A., Cappelli, M. A. 2019; 52 (46)

    View details for DOI 10.1088/1361-6463/ab36c5

    View details for Web of Science ID 000484237900003

  • Effects of flow collisionality on ELM replication in plasma guns FUSION ENGINEERING AND DESIGN Underwood, T. C., Subramaniam, V., Riedel, W. M., Raja, L. L., Cappelli, M. A. 2019; 144: 97–106

    View details for DOI 10.1016/j.fusengdes.2019.04.088

    View details for Web of Science ID 000488300500014

  • Broadband cw-terahertz spectroscopy for characterizing reactive plasmas JOURNAL OF PHYSICS D-APPLIED PHYSICS Ouarasi, K., Righetti, F., Cappelli, M. A. 2019; 52 (19)

    View details for DOI 10.1088/1361-6463/ab085e

    View details for Web of Science ID 000460449400002

  • Electron number density measurements from the frequency shift of a plasma defect state in a one-dimensional photonic crystal EUROPEAN PHYSICAL JOURNAL D Pai, D. Z., Righetti, F., Wang, B. C., Biggs, D. R., Cappelli, M. A. 2019; 73 (5)

    View details for DOI 10.1140/epjd/e2019-90617-y

    View details for Web of Science ID 000467644000005

  • Dynamic formation of stable current-driven plasma jets. Scientific reports Underwood, T. C., Loebner, K. T., Miller, V. A., Cappelli, M. A. 2019; 9 (1): 2588

    Abstract

    Instabilities play a prominent role in determining the inherent structure and properties of magnetized plasma jets spanning both laboratory and astrophysical settings. The manner in which prominent unstable modes dynamically evolve remains key to understanding plasma behavior and control. In astrophysical phenomena, self-similar jets are observed to propagate over vast distances while avoiding breakup caused by unstable mode growth. However, the production of stable dense plasma jets in the laboratory has been limited by the onset of unstable modes that restrict jet lifetime, collimation, and scalability. In this work, we visualize the formation of stable laboratory-generated, dense, super-magnetosonic plasma jets in real time, and we identify an underlying mechanism that contributes to this behavior. The current-driven plasma jets generated in our experiments form a flowing Z-pinch, which is generally unstable to the m=1 kink instability. Our results indicate that a stable dense plasma jet can be maintained for timescales over which a steady pinch current can be sustained, even at levels which would otherwise lead to rapid unstable mode growth and resultant pinch disassembly.

    View details for PubMedID 30796311

  • Millimeter wave control using a plasma filled photonic crystal resonator JOURNAL OF PHYSICS D-APPLIED PHYSICS Biggs, D. R., Marcovati, A., Cappelli, M. A. 2019; 52 (5)

    View details for DOI 10.1088/1361-6463/aaee3d

    View details for Web of Science ID 000451045200002

  • Laser-produced gaseous plasmonic resonators PHYSICS OF PLASMAS Quinones, R., Underwood, T. C., Cappelli, M. A. 2018; 25 (11)

    View details for DOI 10.1063/1.5054022

    View details for Web of Science ID 000451734600046

  • Predictive modeling of plasmas for gaseous plasmonics PLASMA SOURCES SCIENCE & TECHNOLOGY Biggs, D. R., Underwood, T. C., Cappelli, M. A. 2018; 27 (7)

    View details for DOI 10.1088/1361-6595/aacd70

    View details for Web of Science ID 000437840800001

  • Computational and experimental investigation of plasma deflagration jets and detonation shocks in coaxial plasma accelerators PLASMA SOURCES SCIENCE & TECHNOLOGY Subramaniam, V., Underwood, T. C., Raja, L. L., Cappelli, M. A. 2018; 27 (2)

    View details for DOI 10.1088/1361-6595/aaabec

    View details for Web of Science ID 000425980600002

  • Plasma flow reactor for steady state monitoring of physical and chemical processes at high temperatures REVIEW OF SCIENTIFIC INSTRUMENTS Koroglu, B., Mehl, M., Armstrong, M. R., Crowhurst, J. C., Weisz, D. G., Zaug, J. M., Dai, Z., Radousky, H. B., Chernov, A., Ramon, E., Stavrou, E., Knight, K., Fabris, A. L., Cappelli, M. A., Rose, T. P. 2017; 88 (9): 093506

    Abstract

    We present the development of a steady state plasma flow reactor to investigate gas phase physical and chemical processes that occur at high temperature (1000 < T < 5000 K) and atmospheric pressure. The reactor consists of a glass tube that is attached to an inductively coupled argon plasma generator via an adaptor (ring flow injector). We have modeled the system using computational fluid dynamics simulations that are bounded by measured temperatures. In situ line-of-sight optical emission and absorption spectroscopy have been used to determine the structures and concentrations of molecules formed during rapid cooling of reactants after they pass through the plasma. Emission spectroscopy also enables us to determine the temperatures at which these dynamic processes occur. A sample collection probe inserted from the open end of the reactor is used to collect condensed materials and analyze them ex situ using electron microscopy. The preliminary results of two separate investigations involving the condensation of metal oxides and chemical kinetics of high-temperature gas reactions are discussed.

    View details for PubMedID 28964176

  • Low-Mass RF Power Inverter for CubeSat Applications Using 3-D Printed Inductors IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS Liang, W., Raymond, L., Praglin, M., Biggs, D., Righetti, F., Cappelli, M., Holman, B., Davila, J. R. 2017; 5 (2): 880-890

    View details for DOI 10.1109/JESTPE.2016.2644644

    View details for Web of Science ID 000400896000026

  • A plasma deflagration accelerator as a platform for laboratory astrophysics HIGH ENERGY DENSITY PHYSICS Underwood, T. C., Loebner, K. K., Cappelli, M. A. 2017; 23: 73–80

    View details for DOI 10.1016/j.hedp.2017.03.004

    View details for Web of Science ID 000404314500009

  • Tunable microwave pulse generation using discharge plasmas APPLIED PHYSICS LETTERS Biggs, D. R., Cappelli, M. A. 2016; 109 (12)

    View details for DOI 10.1063/1.4963268

    View details for Web of Science ID 000384558700072

  • Damage Morphologies in Targets Exposed to a New Plasma Deflagration Accelerator for ELM Simulation IEEE TRANSACTIONS ON PLASMA SCIENCE Loebner, K. T., Underwood, T. C., Wang, B. C., Cappelli, M. A. 2016; 44 (9): 1534-1540

    View details for DOI 10.1109/TPS.2016.2565508

    View details for Web of Science ID 000384231500011

  • Waveguiding and bending modes in a plasma photonic crystal bandgap device AIP ADVANCES Wang, B., Cappelli, M. A. 2016; 6 (6)

    View details for DOI 10.1063/1.4954668

    View details for Web of Science ID 000379041400015

  • A plasma photonic crystal bandgap device APPLIED PHYSICS LETTERS Wang, B., Cappelli, M. A. 2016; 108 (16)

    View details for DOI 10.1063/1.4946805

    View details for Web of Science ID 000375053000001

  • Radial magnetic compression in the expelled jet of a plasma deflagration accelerator APPLIED PHYSICS LETTERS Loebner, K. T., Underwood, T. C., Mouratidis, T., Cappelli, M. A. 2016; 108 (9)

    View details for DOI 10.1063/1.4943370

    View details for Web of Science ID 000375329200065

  • Time-resolved laser-induced fluorescence measurement of ion and neutral dynamics in a Hall thruster during ionization oscillations JOURNAL OF APPLIED PHYSICS Fabris, A. L., Young, C. V., Cappelli, M. A. 2015; 118 (23)

    View details for DOI 10.1063/1.4937272

    View details for Web of Science ID 000367376600013

  • A zero-equation turbulence model for two-dimensional hybrid Hall thruster simulations PHYSICS OF PLASMAS Cappelli, M. A., Young, C. V., Cha, E., Fernandez, E. 2015; 22 (11)

    View details for DOI 10.1063/1.4935891

    View details for Web of Science ID 000366054900095

  • A tunable microwave plasma photonic crystal filter APPLIED PHYSICS LETTERS Wang, B., Cappelli, M. A. 2015; 107 (17)

    View details for DOI 10.1063/1.4934886

    View details for Web of Science ID 000364234200007

  • Evidence of Branching Phenomena in Current-Driven Ionization Waves PHYSICAL REVIEW LETTERS Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 115 (17)

    Abstract

    This Letter reports the first fully consistent experimental observations of current-driven ionization waves conforming to the magnetohydrodynamic Rankine-Hugoniot model for hydromagnetic shocks. Detailed measurements of the thermodynamic and electrodynamic plasma state variables across the ionization region confirm the existence of two types of waves, corresponding to the upper and lower solution branches of the Hugoniot curve. These waves are generated by pulsed currents in a coaxial gas-fed plasma accelerator. The coupling between the state variables of this complex, transient, three-dimensional system shows a remarkable quantitative agreement of less than 8% deviation from the quasisteady, one-dimensional theoretical model.

    View details for DOI 10.1103/PhysRevLett.115.175001

    View details for Web of Science ID 000363016600002

  • Excited state population dynamics of a xenon ac discharge PLASMA SOURCES SCIENCE & TECHNOLOGY Fabris, A. L., Young, C. V., Cappelli, M. A. 2015; 24 (5)

    View details for DOI 10.1088/0963-0252/24/5/055013

    View details for Web of Science ID 000364336600022

  • Numerical studies of nitric oxide formation in nanosecond-pulsed discharge-stabilized flames of premixed methane/air. Philosophical transactions. Series A, Mathematical, physical, and engineering sciences Bak, M. S., Cappelli, M. A. 2015; 373 (2048)

    Abstract

    A simulation is developed to investigate the kinetics of nitric oxide (NO) formation in premixed methane/air combustion stabilized by nanosecond-pulsed discharges. The simulation consists of two connected parts. The first part calculates the kinetics within the discharge while considering both plasma/combustion reactions and species diffusion, advection and thermal conduction to the surrounding flow. The second part calculates the kinetics of the overall flow after mixing the discharge flow with the surrounding flow to account for the effect that the discharge has on the overall kinetics. The simulation reveals that the discharge produces a significant amount of atomic oxygen (O) as a result of the high discharge temperature and dissociative quenching of excited state nitrogen by molecular oxygen. This atomic oxygen subsequently produces hydroxyl (OH) radicals. The fractions of these O and OH then undergo Zel'dovich reactions and are found to contribute to as much as 73% of the total NO that is produced. The post-discharge simulation shows that the NO survives within the flow once produced.

    View details for DOI 10.1098/rsta.2014.0331

    View details for PubMedID 26170428

  • Self-organization in planar magnetron microdischarge plasmas APPLIED PHYSICS LETTERS Ito, T., Young, C. V., Cappelli, M. A. 2015; 106 (25)

    View details for DOI 10.1063/1.4922898

    View details for Web of Science ID 000357036600045

  • Successive laser ablation ignition of premixed methane/air mixtures OPTICS EXPRESS Bak, M. S., Cappelli, M. A. 2015; 23 (11): A419-A427

    Abstract

    Laser ablation has been used to study successive ignition in premixed methane/air mixtures under conditions in which the flow speed leads to flame blow-out. A range of laser pulse frequencies is experimentally mimicked by varying the time interval between two closely spaced laser pulses. Emission intensities from the laser ablation kernels are measured to qualitatively estimate laser energy coupling, and flame CH* chemiluminescence is recorded in a time-resolved manner to capture the flame evolution and propagation. A comparison of the measurements is made between the two successive breakdown ignition events. It is found that the formation of the subsequent ablation kernel is almost independent of the previous one, however, for the successive breakdowns, the first breakdown and its ensuing combustion created temporal regions of no energy coupling as they heat the gas and lower the density. Flame imaging shows that the second ablation event successfully produces another flame kernel and is capable of holding the flame-base even at pulse intervals where the second laser pulse cannot form a breakdown. This study demonstrates that successive ablation ignition can allow for the use of higher laser frequencies and enhanced flame stabilization than successive breakdown ignition.

    View details for DOI 10.1364/OE.23.00A419

    View details for Web of Science ID 000356902400002

    View details for PubMedID 26072866

  • A fast rise-rate, adjustable-mass-bit gas puff valve for energetic pulsed plasma experiments. Review of scientific instruments Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 86 (6): 063503-?

    Abstract

    A fast rise-rate, variable mass-bit gas puff valve based on the diamagnetic repulsion principle was designed, built, and experimentally characterized. The ability to hold the pressure rise-rate nearly constant while varying the total overall mass bit was achieved via a movable mechanical restrictor that is accessible while the valve is assembled and pressurized. The rise-rates and mass-bits were measured via piezoelectric pressure transducers for plenum pressures between 10 and 40 psig and restrictor positions of 0.02-1.33 cm from the bottom of the linear restrictor travel. The mass-bits were found to vary linearly with the restrictor position at a given plenum pressure, while rise-rates varied linearly with plenum pressure but exhibited low variation over the range of possible restrictor positions. The ability to change the operating regime of a pulsed coaxial plasma deflagration accelerator by means of altering the valve parameters is demonstrated.

    View details for DOI 10.1063/1.4922522

    View details for PubMedID 26133835

  • A fast rise-rate, adjustable-mass-bit gas puff valve for energetic pulsed plasma experiments. Review of scientific instruments Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 86 (6): 063503-?

    Abstract

    A fast rise-rate, variable mass-bit gas puff valve based on the diamagnetic repulsion principle was designed, built, and experimentally characterized. The ability to hold the pressure rise-rate nearly constant while varying the total overall mass bit was achieved via a movable mechanical restrictor that is accessible while the valve is assembled and pressurized. The rise-rates and mass-bits were measured via piezoelectric pressure transducers for plenum pressures between 10 and 40 psig and restrictor positions of 0.02-1.33 cm from the bottom of the linear restrictor travel. The mass-bits were found to vary linearly with the restrictor position at a given plenum pressure, while rise-rates varied linearly with plenum pressure but exhibited low variation over the range of possible restrictor positions. The ability to change the operating regime of a pulsed coaxial plasma deflagration accelerator by means of altering the valve parameters is demonstrated.

    View details for DOI 10.1063/1.4922522

    View details for PubMedID 26133835

  • A Reduced Set of Air Plasma Reactions for Nanosecond Pulsed Plasmas IEEE TRANSACTIONS ON PLASMA SCIENCE Bak, M. S., Cappelli, M. A. 2015; 43 (4): 995-1001

    View details for DOI 10.1109/TPS.2015.2409300

    View details for Web of Science ID 000353113700010

  • Nanosecond-Pulsed Discharge Plasma Splitting of Carbon Dioxide IEEE TRANSACTIONS ON PLASMA SCIENCE Bak, M. S., Im, S., Cappelli, M. 2015; 43 (4): 1002-1007

    View details for DOI 10.1109/TPS.2015.2408344

    View details for Web of Science ID 000353113700011

  • Ion dynamics in an E x B Hall plasma accelerator APPLIED PHYSICS LETTERS Young, C. V., Fabris, A. L., Cappelli, M. A. 2015; 106 (4)

    View details for DOI 10.1063/1.4907283

    View details for Web of Science ID 000348996200080

  • Ion Velocimetry Measurements and Particle-In-Cell Simulation of a Cylindrical Cusped Plasma Accelerator IEEE TRANSACTIONS ON PLASMA SCIENCE Fabris, A. L., Young, C. V., Manente, M., Pavarin, D., Cappelli, M. A. 2015; 43 (1): 54-63

    View details for DOI 10.1109/TPS.2014.2321743

    View details for Web of Science ID 000347786300007

  • Evidence of Branching Phenomena in Current-Driven Ionization Waves. Physical review letters Loebner, K. T., Underwood, T. C., Cappelli, M. A. 2015; 115 (17): 175001

    Abstract

    This Letter reports the first fully consistent experimental observations of current-driven ionization waves conforming to the magnetohydrodynamic Rankine-Hugoniot model for hydromagnetic shocks. Detailed measurements of the thermodynamic and electrodynamic plasma state variables across the ionization region confirm the existence of two types of waves, corresponding to the upper and lower solution branches of the Hugoniot curve. These waves are generated by pulsed currents in a coaxial gas-fed plasma accelerator. The coupling between the state variables of this complex, transient, three-dimensional system shows a remarkable quantitative agreement of less than 8% deviation from the quasisteady, one-dimensional theoretical model.

    View details for PubMedID 26551118

  • Implementation of an Entropy Closure Model for 2-D Hybrid Hall Thruster Simulations IEEE TRANSACTIONS ON PLASMA SCIENCE Cha, E., Cappelli, M. A., Fernandez, E. 2015; 43 (1): 5-11

    View details for DOI 10.1109/TPS.2014.2304852

    View details for Web of Science ID 000347786300002

  • A 2-D Hybrid Hall Thruster Simulation That Resolves the E x B Electron Drift Direction IEEE TRANSACTIONS ON PLASMA SCIENCE Lam, C. M., Fernandez, E., Cappelli, M. A. 2015; 43 (1): 86-94

    View details for DOI 10.1109/TPS.2014.2356650

    View details for Web of Science ID 000347786300010

  • High-Velocity Neutral Plasma Jet Formed by Dense Plasma Deflagration IEEE TRANSACTIONS ON PLASMA SCIENCE Loebner, K. T., Wang, B. C., Poehlmann, F. R., Watanabe, Y., Cappelli, M. A. 2014; 42 (10): 2500-2501

    View details for DOI 10.1109/TPS.2014.2332467

    View details for Web of Science ID 000344548300088

  • Successive laser-induced breakdowns in atmospheric pressure air and premixed ethane-air mixtures COMBUSTION AND FLAME Bak, M. S., Im, S., Cappelli, M. A. 2014; 161 (7): 1744-1751

    View details for DOI 10.1016/j.combustflame.2013.12.029

    View details for Web of Science ID 000337200700007

  • Time-synchronized continuous wave laser-induced fluorescence axial velocity measurements in a diverging cusped field thruster JOURNAL OF PHYSICS D-APPLIED PHYSICS MacDonald, N. A., Cappelli, M. A., Hargus, W. A. 2014; 47 (11)

    View details for DOI 10.1088/0022-3727/47/11/115204

    View details for Web of Science ID 000332761800008

  • Experiments and simulations of an atmospheric pressure lossy dielectric barrier Townsend discharge JOURNAL OF PHYSICS D-APPLIED PHYSICS Im, S., Bak, M. S., Hwang, N., Cappelli, M. A. 2014; 47 (8)

    View details for DOI 10.1088/0022-3727/47/8/085202

    View details for Web of Science ID 000331902900012

  • Plasma Actuator Control of a Lifted Ethane Turbulent Jet Diffusion Flame IEEE TRANSACTIONS ON PLASMA SCIENCE Im, S., Bak, M. S., Mungal, M. G., Cappelli, M. A. 2013; 41 (12): 3293-3298

    View details for DOI 10.1109/TPS.2013.2277722

    View details for Web of Science ID 000328701100015

  • Induced Flow and Optical Emission Generated by a Pulsed 13.56 MHz-5 kHz Plasma Actuator IEEE TRANSACTIONS ON PLASMA SCIENCE Dedrick, J., Im, S., Cappelli, M., Boswell, R. W., Charles, C. 2013; 41 (12): 3275-3278

    View details for DOI 10.1109/TPS.2013.2279879

    View details for Web of Science ID 000328701100012

  • Dielectric Barrier Discharge-Induced Vortex Generation With Discharge-Actuated Boundary Layer Bleed IEEE TRANSACTIONS ON PLASMA SCIENCE Im, S., Bak, M. S., Mungal, M. G., Cappelli, M. A. 2013; 41 (12): 3245-3253

    View details for DOI 10.1109/TPS.2013.2278027

    View details for Web of Science ID 000328701100009

  • Studies on the stability limit extension of premixed and jet diffusion flames of methane, ethane, and propane using nanosecond repetitive pulsed discharge plasmas COMBUSTION AND FLAME Bak, M. S., Im, S., Mungal, M. G., Cappelli, M. A. 2013; 160 (11): 2396-2403

    View details for DOI 10.1016/j.combustflame.2013.05.023

    View details for Web of Science ID 000324006400010

  • A study of flow induced by laser induced breakdown-enhanced dielectric barrier discharges in air APPLIED PHYSICS LETTERS Im, S., Bak, M. S., Cappelli, M. A. 2013; 103 (16)

    View details for DOI 10.1063/1.4825373

    View details for Web of Science ID 000326148700101

  • Surface discharge plasma actuator driven by a pulsed 13.56 MHz-5 kHz voltage waveform JOURNAL OF PHYSICS D-APPLIED PHYSICS Dedrick, J., Im, S., Cappelli, M. A., Boswell, R. W., Charles, C. 2013; 46 (40)

    View details for DOI 10.1088/0022-3727/46/40/405201

    View details for Web of Science ID 000324861100014

  • A Thomson-type mass and energy spectrometer for characterizing ion energy distributions in a coaxial plasma gun operating in a gas-puff mode PHYSICS OF PLASMAS Rieker, G. B., Poehlmann, F. R., Cappelli, M. A. 2013; 20 (7)

    View details for DOI 10.1063/1.4816028

    View details for Web of Science ID 000322535400063

  • Simulations of nanosecond-pulsed dielectric barrier discharges in atmospheric pressure air JOURNAL OF APPLIED PHYSICS Bak, M. S., Cappelli, M. A. 2013; 113 (11)

    View details for DOI 10.1063/1.4795269

    View details for Web of Science ID 000316545200011

  • Surface discharge plasma actuator driven by a pulsed 13.56 MHz–5 kHz voltage waveform Journal of Physics D: Applied Physics Dedrick, J., Im, S., Cappelli, M. A., Boswell, R. W., Charles, C. 2013; 46 (40): 405201

    View details for DOI 10.1088/0022-3727/46/40/405201

  • Dielectric Barrier Discharge-Induced Vortex Generation With Discharge-Actuated Boundary Layer Bleed Plasma Science, IEEE Transactions on Im, S., Bak, M. S., Mungal, M., G., Cappelli, M., A. 2013; 41 (12): 3245 - 3253

    View details for DOI 10.1109/TPS.2013.2278027

  • Plasma Actuator Control of a Lifted Ethane Turbulent Jet Diffusion Flame Plasma Science, IEEE Transactions on Im, S. K., Bak, M. S., Mungal, M. G., Cappelli, M. A. 2013; 41 (12): 3293 - 3298

    View details for DOI 10.1109/TPS.2013.2277722

  • The manipulation of an unstarting supersonic flow by plasma actuator JOURNAL OF PHYSICS D-APPLIED PHYSICS Im, S., Do, H., Cappelli, M. A. 2012; 45 (48)

    View details for DOI 10.1088/0022-3727/45/48/485202

    View details for Web of Science ID 000311148300009

  • Optically pumped cesium plasma neutralization of space charge in photon-enhanced thermionic energy converters APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2012; 101 (21)

    View details for DOI 10.1063/1.4767349

    View details for Web of Science ID 000311477600075

  • Time-synchronized continuous wave laser-induced fluorescence on an oscillatory xenon discharge REVIEW OF SCIENTIFIC INSTRUMENTS MacDonald, N. A., Cappelli, M. A., Hargus, W. A. 2012; 83 (11)

    Abstract

    A novel approach to time-synchronizing laser-induced fluorescence measurements to an oscillating current in a 60 Hz xenon discharge lamp using a continuous wave laser is presented. A sample-hold circuit is implemented to separate out signals at different phases along a current cycle, and is followed by a lock-in amplifier to pull out the resulting time-synchronized fluorescence trace from the large background signal. The time evolution of lower state population is derived from the changes in intensity of the fluorescence excitation line shape resulting from laser-induced fluorescence measurements of the 6s(')[1/2](1)(0)-6p(')[3/2](2) xenon atomic transition at λ = 834.68 nm. Results show that the lower state population oscillates at twice the frequency of the discharge current, 120 Hz.

    View details for DOI 10.1063/1.4766958

    View details for Web of Science ID 000312034400018

    View details for PubMedID 23206061

  • Plasma-assisted stabilization of laminar premixed methane/air flames around the lean flammability limit COMBUSTION AND FLAME Bak, M. S., Do, H., Mungal, M. G., Cappelli, M. A. 2012; 159 (10): 3128-3137

    View details for DOI 10.1016/j.combustflame.2012.03.023

    View details for Web of Science ID 000308619100013

  • Dielectric barrier discharge induced boundary layer suction APPLIED PHYSICS LETTERS Im, S., Cappelli, M. A. 2012; 100 (26)

    View details for DOI 10.1063/1.4731288

    View details for Web of Science ID 000305831500108

  • Ion velocity and plasma potential measurements of a cylindrical cusped field thruster JOURNAL OF APPLIED PHYSICS MacDonald, N. A., Young, C. V., Cappelli, M. A., Hargus, W. A. 2012; 111 (9)

    View details for DOI 10.1063/1.4707953

    View details for Web of Science ID 000304109900016

  • Nanoparticle production in arc generated fireballs of granular silicon powder AIP ADVANCES Ito, T., Cappelli, M. A. 2012; 2 (1)

    View details for DOI 10.1063/1.3681283

    View details for Web of Science ID 000302225400044

  • A Simulation of the Effects of Varying Repetition Rate and Pulse Width of Nanosecond Discharges on Premixed Lean Methane-Air Combustion Journal of Combustion Bak, M. S., Cappelli, M. A. 2012; 2012: 11

    View details for DOI 10.1155/2012/137653

  • The Structure of Nanosecond Repetitively Pulsed Spark Discharges in Air IEEE TRANSACTIONS ON PLASMA SCIENCE Pai, D. Z., Cappelli, M. A., Laux, C. O. 2011; 39 (11): 2258-2259

    View details for DOI 10.1109/TPS.2011.2160656

    View details for Web of Science ID 000299683400102

  • The influence of boundary layers on supersonic inlet flow unstart induced by mass injection EXPERIMENTS IN FLUIDS Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011; 51 (3): 679-691

    View details for DOI 10.1007/s00348-011-1077-3

    View details for Web of Science ID 000294347800009

  • Laser-induced fluorescence velocity measurements of a diverging cusped-field thruster JOURNAL OF PHYSICS D-APPLIED PHYSICS MacDonald, N. A., Cappelli, M. A., Gildea, S. R., Martinez-Sanchez, M., Hargus, W. A. 2011; 44 (29)

    View details for DOI 10.1088/0022-3727/44/29/295203

    View details for Web of Science ID 000292383000011

  • Visualizing supersonic inlet duct unstart using planar laser Rayleigh scattering EXPERIMENTS IN FLUIDS Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011; 50 (6): 1651-1657

    View details for DOI 10.1007/s00348-010-1028-4

    View details for Web of Science ID 000291042300014

  • On the quenching of excited electronic states of molecular nitrogen in nanosecond pulsed discharges in atmospheric pressure air APPLIED PHYSICS LETTERS Bak, M. S., Kim, W., Cappelli, M. A. 2011; 98 (1)

    View details for DOI 10.1063/1.3535986

    View details for Web of Science ID 000286009800014

  • Laser-Induced Fluorescence Velocity Measurements of a Diverging Cusped Field Thruster Journal of Physics D: Applied Physics MacDonald, N. A., Cappelli, M. A., Gildea, S. R., Martínez-Sánchez, M., Hargus, W. A. 2011; 44 (29)

    View details for DOI 10.1088/0022-3727/44/29/295203

  • Plasma assisted flame ignition of supersonic flows over a flat wall COMBUSTION AND FLAME Do, H., Im, S., Cappelli, M. A., Mungal, M. G. 2010; 157 (12): 2298-2305

    View details for DOI 10.1016/j.combustflame.2010.07.006

    View details for Web of Science ID 000283967300009

  • Current distribution measurements inside an electromagnetic plasma gun operated in a gas-puff mode PHYSICS OF PLASMAS Poehlmann, F. R., Cappelli, M. A., Rieker, G. B. 2010; 17 (12)

    Abstract

    Measurements are presented of the time-dependent current distribution inside a coaxial electromagnetic plasma gun. The measurements are carried out using an array of six axially distributed dual-Rogowski coils in a balanced circuit configuration. The radial current distributions indicate that operation in the gas-puff mode, i.e., the mode in which the electrode voltage is applied before injection of the gas, results in a stationary ionization front consistent with the presence of a plasma deflagration. The effects of varying the bank capacitance, transmission line inductance, and applied electrode voltage were studied over the range from 14 to 112 μF, 50 to 200 nH, and 1 to 3 kV, respectively.

    View details for DOI 10.1063/1.3526603

    View details for Web of Science ID 000285770500069

    View details for PubMedCentralID PMC3026009

  • Plasma assisted cavity flame ignition in supersonic flows COMBUSTION AND FLAME Do, H., Cappelli, M. A., Mungal, M. G. 2010; 157 (9): 1783-1794

    View details for DOI 10.1016/j.combustflame.2010.03.009

    View details for Web of Science ID 000280267700015

  • On the role of fluctuations, cathode placement, and collisions on the transport of electrons in the near-field of Hall thrusters PHYSICS OF PLASMAS Smith, A. W., Cappelli, M. A. 2010; 17 (9)

    View details for DOI 10.1063/1.3479827

    View details for Web of Science ID 000282439300032

  • Dielectric barrier discharge control of a turbulent boundary layer in a supersonic flow APPLIED PHYSICS LETTERS Im, S., Do, H., Cappelli, M. A. 2010; 97 (4)

    View details for DOI 10.1063/1.3473820

    View details for Web of Science ID 000281059200020

  • Single particle simulations of electron transport in the near-field of Hall thrusters JOURNAL OF PHYSICS D-APPLIED PHYSICS Smith, A. W., Cappelli, M. A. 2010; 43 (4)

    View details for DOI 10.1088/0022-3727/43/4/045203

    View details for Web of Science ID 000273551300009

  • The role of in situ reforming in plasma enhanced ultra lean premixed methane/air flames COMBUSTION AND FLAME Kim, W., Mungal, M. G., Cappelli, M. A. 2010; 157 (2): 374-383

    View details for DOI 10.1016/j.combustflame.2009.06.016

    View details for Web of Science ID 000273702400018

  • Structure of laboratory ball lightning PHYSICAL REVIEW E Ito, T., Tamura, T., Cappelli, M. A., Hamaguchi, S. 2009; 80 (6)

    Abstract

    Trajectories of self-sustained laboratory ball lightning, generated by arc discharges with silicon, are investigated for understanding the possibility of buoyant flight. Extremely low apparent densities are found, nearly approaching that of standard air. The freely buoyant balls are observed to survive for about 0.1 s, with significantly buoyant balls surviving for several seconds. These ball lightning objects are found to have a density and size that can easily allow them to be carried by a gentle breeze of a few meters per second. The results are interpreted by a model that is an extension of that first proposed by Abrahamson and Dinniss [J. Abrahamson and J. Dinniss, Nature (London) 403, 519 (2000)]. The buoyant behavior of ball lightning seen in our experiments is believed to arise as a result of the formation of a nanoparticle oxide network growing from a molten silicon core.

    View details for DOI 10.1103/PhysRevE.80.067401

    View details for Web of Science ID 000273228000094

    View details for PubMedID 20365306

  • Energetic neutrals in the cathode sheath of argon direct-current discharges JOURNAL OF APPLIED PHYSICS Ito, T., Cappelli, M. A. 2009; 106 (2)

    View details for DOI 10.1063/1.3160329

    View details for Web of Science ID 000268613000020

  • Time and space-correlated plasma potential measurements in the near field of a coaxial Hall plasma discharge PHYSICS OF PLASMAS Smith, A. W., Cappelli, M. A. 2009; 16 (7)

    View details for DOI 10.1063/1.3155097

    View details for Web of Science ID 000268615200058

  • Electrostatic probe disruption of drift waves in magnetized microdischarges APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2009; 94 (21)

    View details for DOI 10.1063/1.3132587

    View details for Web of Science ID 000266500400009

  • The Hall effect and rocket flight PHYSICS TODAY Cappelli, M. 2009; 62 (4): 76-77

    View details for Web of Science ID 000264991800022

  • Jet Flame Ignition in a Supersonic Crossflow Using a Pulsed Nonequilibrium Plasma Discharge IEEE TRANSACTIONS ON PLASMA SCIENCE Do, H., Mungal, M. G., Cappelli, M. A. 2008; 36 (6): 2918-2923

    View details for DOI 10.1109/TPS.2008.2005986

    View details for Web of Science ID 000262061900007

  • A Study of Plasma-Stabilized Diffusion Flames at Elevated Ambient Temperatures IEEE TRANSACTIONS ON PLASMA SCIENCE Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2008; 36 (6): 2898-2904

    View details for DOI 10.1109/TPS.2008.2004345

    View details for Web of Science ID 000262061900004

  • Shear-Based Model for Electron Transport in Hybrid Hall Thruster Simulations IEEE TRANSACTIONS ON PLASMA SCIENCE Scharfe, M. K., Thomas, C. A., Scharfe, D. B., Gascon, N., Cappelli, M. A., Fernandez, E. 2008; 36 (5): 2058-2068

    View details for DOI 10.1109/TPS.2008.2004364

    View details for Web of Science ID 000261363100011

  • An analysis of millimetre-wave interferometry on Hall thruster plumes by finite difference time domain simulations JOURNAL OF PHYSICS D-APPLIED PHYSICS Lee, J., Cappelli, M. A. 2008; 41 (18)

    View details for DOI 10.1088/0022-3727/41/18/185205

    View details for Web of Science ID 000258985500021

  • A simple isentropic model of electron transport in Hall thrusters JOURNAL OF PHYSICS D-APPLIED PHYSICS Knoll, A. K., Cappelli, M. A. 2008; 41 (16)

    View details for DOI 10.1088/0022-3727/41/16/162003

    View details for Web of Science ID 000258221100003

  • High speed images of drift waves and turbulence in magnetized microplasmas IEEE TRANSACTIONS ON PLASMA SCIENCE Ito, T., Cappelli, M. A. 2008; 36 (4): 1228-1229

    View details for DOI 10.1109/TPS.2003.927347

    View details for Web of Science ID 000258618200184

  • Optimal discharge placement in plasma-assisted combustion of a methane jet in cross flow COMBUSTION AND FLAME Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2008; 153 (4): 603-615

    View details for DOI 10.1016/j.combustflame.2007.11.015

    View details for Web of Science ID 000256319800009

  • Cross-talk in multiple dielectric barrier discharge actuators APPLIED PHYSICS LETTERS Do, H., Kim, W., Cappelli, M. A., Mungal, M. G. 2008; 92 (7)

    View details for DOI 10.1063/1.2885085

    View details for Web of Science ID 000253540500021

  • Formation and role of cool flames in plasma-assisted premixed combustion APPLIED PHYSICS LETTERS Kim, W., Mungal, M. G., Cappelli, M. A. 2008; 92 (5)

    View details for DOI 10.1063/1.2841894

    View details for Web of Science ID 000253016500020

  • Growth of resistive instabilities in ExB plasma discharge simulations PHYSICS OF PLASMAS Fernandez, E., Scharfe, M. K., Thomas, C. A., Gascon, N., Cappelli, M. A. 2008; 15 (1)

    View details for DOI 10.1063/1.2823033

    View details for Web of Science ID 000252821500004

  • On the role of oxygen in dielectric barrier discharge actuation of aerodynamic flows APPLIED PHYSICS LETTERS Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2007; 91 (18)

    View details for DOI 10.1063/1.2803755

    View details for Web of Science ID 000250643600025

  • Simulating plasma-induced hall thruster wall erosion with a two-dimensional hybrid model IEEE TRANSACTIONS ON PLASMA SCIENCE Sommer, E., Scharfe, M. K., Gascon, N., Cappelli, M. A., Fernandez, E. 2007; 35 (5): 1379-1387

    View details for DOI 10.1109/TPS.2007.905943

    View details for Web of Science ID 000250993200023

  • Experimental characterization of a micro-hall thruster JOURNAL OF PROPULSION AND POWER Ito, T., Gascon, N., Crawford, W. S., Cappelli, M. A. 2007; 23 (5): 1068-1074

    View details for DOI 10.2514/1.27140

    View details for Web of Science ID 000249671200021

  • On the production of energetic neutrals in the cathode sheath of direct-current discharges APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2007; 90 (10)

    View details for DOI 10.1063/1.2711416

    View details for Web of Science ID 000244791700022

  • Investigation of NO production and flame structure in plasma enhanced premixed combustion PROCEEDINGS OF THE COMBUSTION INSTITUTE Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2007; 31: 3319-3326

    View details for DOI 10.1016/j.proci.2006.07.107

    View details for Web of Science ID 000252858200189

  • Bluff body flow separation control using surface dielectric barrier discharges 45th AIAA Aerospace Sciences Meeting and Exhibit Do, H., Kim, W., Mungal, M. G., Cappelli, M. A. 2007

    View details for DOI 10.2514/6.2007-939

  • Plasma-discharge stabilization of jet diffusion flames IEEE TRANSACTIONS ON PLASMA SCIENCE Kim, W., Do, H., Mungal, M. G., Cappelli, M. A. 2006; 34 (6): 2545-2551

    View details for DOI 10.1109/TPS.2006.886084

    View details for Web of Science ID 000242922800011

  • Millimetre wave plasma interferometry in the near field of a Hall plasma accelerator JOURNAL OF PHYSICS D-APPLIED PHYSICS Cappelli, M. A., Gascon, N., Hargus, W. A. 2006; 39 (21): 4582-4588

    View details for DOI 10.1088/0022-3727/39/21/013

    View details for Web of Science ID 000242476000015

  • Nonintrusive characterization of the azimuthal drift current in a coaxial E x B discharge plasma PHYSICAL REVIEW E Thomas, C. A., Gascon, N., Cappelli, M. A. 2006; 74 (5)

    Abstract

    A diagnostic is developed for the nonintrusive study of the azimuthal drift current in the coaxial ExB discharge of a Hall plasma accelerator. The technique of fast current interruption is used to generate a signal on several loop antenna that circle the outer wall of the discharge channel. The signal on the antenna is recorded, and used to determine the spatial distribution of the azimuthal drift at the moment of current interruption. The results of the experiment are compared to estimates derived via prior intrusive measurements, and the intrusive estimates are found to predict the spatial characteristics of the azimuthal drift, but underestimate its total magnitude. The self-induced magnetic field is then calculated and added to the applied magnetic field. The peak total magnetic field is seen to shift 2-5mm towards the anode due to self-induction, and suffer a reduction in magnitude of 10%-15%. The peak in the total magnetic field is then found to more closely coincide with the peak of the measured electric field than the peak of the vacuum magnetic field. It is concluded that the self-induced magnetic field could be important to anomalous electron mobility in the Hall-effect thruster, and simulation efforts should try to include its impact.

    View details for DOI 10.1103/PhysRevE.74.056402

    View details for PubMedID 17279996

  • Aerodynamic modification of flow over bluff objects by plasma actuation EXPERIMENTS IN FLUIDS Sung, Y., Kim, W., Mungal, M. G., Cappelli, M. A. 2006; 41 (3): 479-486

    View details for DOI 10.1007/s00348-006-0175-0

    View details for Web of Science ID 000240058000011

  • Low-power magnetized microdischarge ion source APPLIED PHYSICS LETTERS Ito, T., Cappelli, M. A. 2006; 89 (6)

    View details for DOI 10.1063/1.2335612

    View details for Web of Science ID 000239690800028

  • Comparison of hybrid Hall thruster model to experimental measurements PHYSICS OF PLASMAS Scharfe, M. K., Gascon, N., Cappelli, M. A., Fernandez, E. 2006; 13 (8)

    View details for DOI 10.1063/1.2336186

    View details for Web of Science ID 000240237700052

  • Ion energy distribution and gas heating in the cathode fall of a direct-current microdischarge PHYSICAL REVIEW E Ito, T., Cappelli, M. A. 2006; 73 (4)

    Abstract

    This paper reports on measurements of the ion energy distribution (IED) at the cathode of an argon dc microdischarge using energy-resolved molecular beam mass spectrometry. The measurements are conducted at a fixed pressure-electrode separation product (pd) of 1 cm Torr with a maximum discharge pressure of 20 Torr. The measured IED is compared to the theory of Davis and Vanderslice [W. D. Davis and T. A. Vanderslice, Phys. Rev. 131, 219 (1963)]. A higher pressure in a case of almost constant normalized current densities by pressure (Jp(-2) = 0.080+/-0.006 mA/cm(-2) Torr(-2)) yields a lower ratio of the ion mean free path to the sheath thickness. The results in almost constant Jp(-2) case then indicate that a scaling law of Jp(-2) is no longer applicable for IED of microdischarge. Expected background gaseous temperatures from IEDs with the collisional Child law have reasonable increasing with increased current density (J) in both cases of almost constant Jp(-2) and a constant pressure of 10 Torr. Supported by temperature measurement by laser absorption spectroscopy, it is demonstrated that the expanded theory might be applicable also to microdischarges (Ar approximately 20 Torr) with temperature adjusting.

    View details for DOI 10.1103/PhysRevE.73.046401

    View details for Web of Science ID 000237146800070

    View details for PubMedID 16711933

  • Wall erosion in 2D Hall thruster simulations 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Sommier, E., Allis, M. K., Gascon, N., Cappelli, M. A. 2006

    View details for DOI 10.2514/6.2006-4656

  • Further development of a micro Hall thruster 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit Ito, T., Gascon, N., Crawford, W., Cappelli, M. A. 2006

    View details for DOI 10.2514/6.2006-4495

  • Arcjet plasma neutralization of Hall thrusters, Part 1: Hybrid thruster mission analysis JOURNAL OF SPACECRAFT AND ROCKETS Hargus, W. A., Schilling, J. H., Walker, Q. E., Cappelli, M. A. 2004; 41 (6): 1016-1022

    View details for Web of Science ID 000225846700014

  • Arcjet neutralization of Hall thrusters, Part 2: Experimental demonstration JOURNAL OF SPACECRAFT AND ROCKETS Walker, Q. E., Gascon, N., Cappelli, M. A., Hargus, W. A., Schilling, J. A. 2004; 41 (6): 1023-1030

    View details for Web of Science ID 000225846700015

  • Non-intrusive characterization of the hall thruster azimuthal drift current 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Thomas, C. A., Gascon, N., Cappelli, M. A. 2004

    View details for DOI 10.2514/6.2004-3776

  • Arcjet Plasma Neutralization of Hall Thrusters, Part 2: Experimental Demonstration Journal of Spacecraft and Rockets Walker, Q. E., Gascon, N., Cappelli, M. A., Hargus, Jr., W. A., Schilling, J. H. 2004; 41: 1023-1030

    View details for DOI 10.2514/1.3280

  • Mechanism for anomalously high voltages in high-pressure dc microdischarge mixtures of He, Ne, and Xe JOURNAL OF APPLIED PHYSICS Ganter, R., Cappelli, M. 2003; 94 (3): 2145-2147

    View details for DOI 10.1063/1.1590406

    View details for Web of Science ID 000184400400130

  • Optical measurements of plasma velocity and temperature in a low-rate, low-power LPPS system SURFACE & COATINGS TECHNOLOGY Hamatani, H., Crawford, W. S., Cappelli, M. A. 2003; 162 (1): 79-92

    View details for Web of Science ID 000178898100011

  • A Study of the Azimuthal Electron Drift in an E x B Discharge Using a Non-invasive Antenna Array 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit Thomas, C. A., Cappelli, M. A. 2003

    View details for DOI 10.2514/6.2003-4854

  • Laser-induced-fluorescence characteristics of a helium arcjet flow APPLIED PHYSICS B-LASERS AND OPTICS Walker, Q. E., Cappelli, M. A. 2002; 75 (6-7): 717-722

    View details for DOI 10.1007/s00340-002-1050-1

    View details for Web of Science ID 000180587100017

  • Kinetic study of wall collisions in a coaxial Hall discharge PHYSICAL REVIEW E Meezan, N. B., Cappelli, M. A. 2002; 66 (3)

    Abstract

    Coaxial Hall discharges (also known as Hall thrusters, stationary plasma thrusters, and closed-drift accelerators) are cross-field plasma sources under development for space propulsion applications. The importance of the electron-wall interaction to the Hall discharge operation is studied the through analysis of experimental data and simulation of the electron energy distribution function (EEDF) inside the discharge channel. Experimental time-average plasma property data from a laboratory Hall discharge are used to calculate the electron conductivity and to estimate the rate of wall-loss collisions. The electron Boltzmann equation is then solved in the local field limit, using the experimental results as inputs. The equation takes into account ionization and wall collisions, including secondary electrons produced at the wall. Local electron balances are used to calculate the sheath potential at the insulator walls. Results show an EEDF depleted at high energy due to electron loss to the walls. The calculated EEDFs agree well with experimental electron temperature data when the experimentally determined effective collision frequency is used for electron momentum transport. The electron wall-loss and wall-return frequencies are extremely low compared to those predicted by a Maxwellian of equal average energy. The very low frequency of wall collisions suggests that secondary electrons do not contribute to cross-field transport. This conclusion holds despite significant experimental uncertainty.

    View details for DOI 10.1103/PhysRevE.66.036401

    View details for Web of Science ID 000178624400015

    View details for PubMedID 12366261

  • Ion beam dynamics in a linear Hall discharge IEEE TRANSACTIONS ON PLASMA SCIENCE Meezan, N. B., Cappelli, M. A. 2002; 30 (1): 138-139

    View details for Web of Science ID 000175845900068

  • Interior and exterior laser-induced fluorescence and plasma measurements within a Hall thruster JOURNAL OF PROPULSION AND POWER Hargus, W. A., Cappelli, M. A. 2002; 18 (1): 159-168

    View details for Web of Science ID 000173577200019

  • A characterization of plasma fluctuations within a hall discharge IEEE TRANSACTIONS ON PLASMA SCIENCE Chesta, E., Lam, C. M., Meezan, N. B., Schmidt, D. P., Cappelli, M. A. 2001; 29 (4): 582-591

    View details for Web of Science ID 000170571500003

  • Laser-induced fluorescence measurements of velocity within a Hall discharge APPLIED PHYSICS B-LASERS AND OPTICS Hargus, W. A., Cappelli, M. A. 2001; 72 (8): 961-969

    View details for Web of Science ID 000169039800011

  • Mass spectrometric and Langmuir probe measurements in inductively coupled plasmas in Ar, CHF3/As and CHF3/Ar/O-2 mixtures PLASMA SOURCES SCIENCE & TECHNOLOGY Kim, J. S., Rao, M. V., Cappelli, M. A., Sharma, S. P., Meyyappan, M. 2001; 10 (2): 191-204

    View details for Web of Science ID 000169258200009

  • Parametric study of the vacuum ultraviolet emission and electrical characteristics of a He-Xe microdischarge JOURNAL OF APPLIED PHYSICS Postel, O. B., Cappelli, M. A. 2001; 89 (9): 4719-4726

    View details for Web of Science ID 000168130100006

  • Stability of a magnetized Hall plasma discharge JOURNAL OF APPLIED PHYSICS Chesta, E., Meezan, N. B., Cappelli, M. A. 2001; 89 (6): 3099-3107

    View details for Web of Science ID 000167248100005

  • Anomalous electron mobility in a coaxial Hall discharge plasma PHYSICAL REVIEW E Meezan, N. B., Hargus, W. A., Cappelli, M. A. 2001; 63 (2)

    Abstract

    A comprehensive analysis of measurements supporting the presence of anomalous cross-field electron mobility in Hall plasma accelerators is presented. Nonintrusive laser-induced fluorescence measurements of neutral xenon and ionized xenon velocities, and various electrostatic probe diagnostic measurements are used to locally determine the effective electron Hall parameter inside the accelerator channel. These values are then compared to the classical (collision-driven) Hall parameters expected for a quiescent magnetized plasma. The results indicate that in the vicinity of the anode, where there are fewer plasma instabilities, the electron-transport mechanism is likely elastic collisions with the background neutral xenon. However, we find that in the vicinity of the discharge channel exit, where the magnetic field is the strongest and where there are intense fluctuations in the plasma properties, the inferred Hall parameter departs from the classical value, and is close to the Bohm value of (omega(ce)tau)(eff) approximately 16. These results are used to support a simple model for the Hall parameter that is based on the scalar addition of the electron collision frequencies (elastic collision induced plus fluctuation induced), as proposed by Boeuf and Garrigues [J. Appl. Phys. 84, 3541 (1998)]. The results also draw attention to the possible role of fluctuations in enhancing electron transport in regions where the electrons are highly magnetized.

    View details for Web of Science ID 000167022500062

    View details for PubMedID 11308588

  • A 90 GHz Phase-Bridge Interferometer for Plasma Density Measurements In the Near Field of a Hall Thruster 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Joint Propulsion Conferences Cappelli, M. A., Hermann, W., Kodiak, M., Gascon, N., Hargus, Jr., W. 2001

    View details for DOI 10.2514/6.2004-3775

  • Doppler-free absorption measurements of Stark broadening in a flowing hydrogen plasma JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Cappelli, M. A., Walker, Q. E., Storm, P. V. 2000; 66 (4): 343-361

    View details for Web of Science ID 000087091600003

  • Methyl concentration measurements during microwave plasma-assisted diamond deposition PLASMA CHEMISTRY AND PLASMA PROCESSING Cappelli, M. A., Owano, T. G., Gicquel, A., Duten, X. 2000; 20 (1): 1-12

    View details for Web of Science ID 000086551300001

  • Raman scattering measurements of molecular hydrogen in a low-density, arc-heated plasma APPLIED PHYSICS B-LASERS AND OPTICS Beattie, D. R., Cappelli, M. A. 2000; 70 (3): 419-427

    View details for Web of Science ID 000088307800016

  • A low-power, linear-geometry Hall plasma source with an open electron-drift PLASMA SOURCES SCIENCE & TECHNOLOGY Schmidt, D. P., Meezan, N. B., Hargus, W. A., Cappelli, M. A. 2000; 9 (1): 68-76

    View details for Web of Science ID 000085585100011

  • Vacuum emission and breakdown characteristics of a planar He-Xe microdischarge APPLIED PHYSICS LETTERS Postel, O. B., Cappelli, M. A. 2000; 76 (5): 544-546

    View details for Web of Science ID 000084938700008

  • Vacuum ultraviolet emission and metastable state properties of DC microdischarges 27th IEEE International Conference on Plasma Science Postel, O. B., Cappelli, M. A. 2000

    View details for DOI 10.1109/PLASMA.2000.854759

  • Electrohydrodynamic flow control with a glow-discharge surface plasma AIAA journal Cappelli, M. A., Roth, J. R., Sherman, D. M., Wilkinson, S. P. 2000; 38 (7): 1166-1172

    View details for DOI 10.2514/2.1110

  • Ion energy and momentum flux dependence of diamond-like carbon film synthesis in radio frequency discharges SURFACE & COATINGS TECHNOLOGY Glew, A. D., Saha, R., Kim, J. S., Cappelli, M. A. 1999; 114 (2-3): 224-229

    View details for Web of Science ID 000080808500015

  • Coherent structures in crossed-field closed-drift Hall discharges IEEE TRANSACTIONS ON PLASMA SCIENCE Cappelli, M. A., Hargus, W. A., Meezan, N. B. 1999; 27 (1): 96-97

    View details for Web of Science ID 000080369700047

  • LIF measurements of a low-power helium arcjet IEEE International Conference on Plasma Science Walker, Q. E., Cappelli, M. A. 1999

    View details for DOI 10.1109/PLASMA.1999.829653

  • The structure of an expanding hydrogen arcjet plasma PHYSICS OF PLASMAS Hargus, W. A., Cappelli, M. A. 1998; 5 (12): 4488-4497

    View details for Web of Science ID 000077031000047

  • Competing surface oxidation reactions during diamond synthesis in low pressure flames JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS Kim, J. S., Cappelli, M. A. 1998; 37 (11): 6223-6228

    View details for Web of Science ID 000077648000079

  • Temperature measurements in low-pressure, diamond-forming, premixed flames JOURNAL OF APPLIED PHYSICS Kim, J. S., Cappelli, M. A. 1998; 84 (8): 4595-4602

    View details for Web of Science ID 000076185100083

  • Arcjet nozzle flow-field characterization by laser-induced fluorescence APPLIED OPTICS Storm, P. V., Cappelli, M. A. 1998; 37 (3): 486-495

    Abstract

    Laser-induced fluorescence of the Balmer-alpha (H(alpha)) transition of atomic hydrogen was performed within the nozzle of a 1-kW class radiatively cooled arcjet thruster operating on hydrogen and synthesized-hydrazine propellants. Axial velocities were determined from the Doppler shift of the H(alpha) line center relative to a stationary reference, whereas translational temperatures and electron number densities were determined from a line-shape analysis of the H(alpha) transition. The results are compared with a numerical model and indicate excellent agreement with the velocities, as well as temperatures near the nozzle exit. There are discrepancies, however, in the temperatures far upstream of the exit and in the electron densities, suggesting needed improvements in the modeling of the recombination chemistry.

    View details for Web of Science ID 000071501400013

    View details for PubMedID 18268611

  • Plasma-jet deposition of diamond Low-Pressure Synthetic Diamond Cappelli, M. A., Owano, T. G. 1998: 59-84

    View details for DOI 10.1007/978-3-642-71992-9_4

  • Diagnostics of Plasma Propulsion Devices American Physical Society, Division of Plasma Physics Meeting Cappelli, M. A. 1998

    View details for DOI 10.1109/PLASMA.1994.588875

  • Main physical features and processes determining the performance of stationary plasma thrusters Journal of Propulsion and Power Cappelli, M. A., Kim, V. 1998; 14 (5): 736-743

    View details for DOI 10.2514/2.5335

  • Near-edge X-ray absorption fine structure spectroscopy of arcjet-deposited cubic boron nitride DIAMOND AND RELATED MATERIALS BERNS, D. H., Cappelli, M. A., Shuh, D. K. 1997; 6 (12): 1883-1886

    View details for Web of Science ID A1997YG13600021

  • Laser-induced fluorescence study of a xenon Hall thruster APPLIED PHYSICS B-LASERS AND OPTICS Cedolin, R. J., Hargus, W. A., Storm, P. V., Hanson, R. K., Cappelli, M. A. 1997; 65 (4-5): 459-469

    View details for Web of Science ID A1997YA61300005

  • Low energy ion impact-enhanced growth of cubic boron nitride in a supersonic nitrogen/argon plasma flow JOURNAL OF MATERIALS RESEARCH BERNS, D. H., Cappelli, M. A. 1997; 12 (8): 2014-2026

    View details for Web of Science ID A1997XQ27800009

  • Arcjet plasma enhanced vapor phase epitaxy of GaN MATERIALS LETTERS Cappelli, M. A., Kull, A. E., Schwendner, K., LEE, H., Harris, S. J., MROCZKOWSKI, J. 1997; 31 (3-6): 161-164

    View details for Web of Science ID A1997XF56700001

  • CH3 detection in a low-density supersonic arcjet plasma during diamond synthesis APPLIED PHYSICS LETTERS Loh, M. H., Cappelli, M. A. 1997; 70 (8): 1052-1054

    View details for Web of Science ID A1997WJ62600046

  • CH3 detection in a low-density supersonic arcjet plasma during diamond synthesis Applied physics letters Loh, M. H., Cappelli, M. A. 1997; 70 (8): 1052 - 1054

    View details for DOI 10.1063/1.118439

  • Radiative emission analysis of an expanding hydrogen arc plasma .2. Plume region diagnostics through radial emission JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Storm, P. V., Cappelli, M. A. 1996; 56 (6): 919-932

    View details for Web of Science ID A1996WA55600009

  • Radiative emission analysis of an expanding hydrogen arc plasma .1. Arc region diagnostics through axial emission JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER Storm, P. V., Cappelli, M. A. 1996; 56 (6): 901-918

    View details for Web of Science ID A1996WA55600008

  • Interior plasma diagnostics of arcjet thrusters JOURNAL OF PROPULSION AND POWER Cappelli, M. A., Storm, P. V. 1996; 12 (6): 1070-1076

    View details for Web of Science ID A1996VT42600010

  • Stark broadening corrections to laser-induced fluorescence temperature measurements in a hydrogen arcjet plume APPLIED OPTICS Storm, P. V., Cappelli, M. A. 1996; 35 (24): 4913-4918

    Abstract

    Laser-induced fluorescence of the H(α) transition of atomic hydrogen has previously been performed in the plume of a hydrogen arcjet thruster. Measurements of plasma velocity and temperature, based on the Doppler shift and broadening of the H(α) line shape, were previously published [Appl. Opt. 32, 6117 (1993)]. In that paper the Stark broadening of the H(α) transition was estimated from static-ion calculations performed in the early 1970's and found to be negligible in comparison with the Doppler broadening. However, more recent dynamic-ion calculations have shown the Stark broadening to be considerably larger than was previously assumed, resulting in inaccurate temperature measurements. We present a reanalysis of the fluorescence data, taking into account the improved Stark broadening calculations. The correct atomic hydrogen translation temperature and electron number density are obtained from the Doppler and Stark broadening components of the measured line shape. The results indicate a substantial drop in temperature from those previously reported.

    View details for Web of Science ID A1996VC32000030

    View details for PubMedID 21102917

  • Laser-induced fluorescence measurements of resonance broadening in xenon PHYSICAL REVIEW A Cedolin, R. J., Hanson, R. K., Cappelli, M. A. 1996; 54 (1): 335-342

    View details for Web of Science ID A1996UX03400038

  • Cubic boron nitride synthesis in low-density supersonic plasma flows APPLIED PHYSICS LETTERS BERNS, D. H., Cappelli, M. A. 1996; 68 (19): 2711-2713

    View details for Web of Science ID A1996UJ08900037

  • Fluorescence velocity measurements in the interior of a hydrogen arcjet nozzle AIAA JOURNAL Storm, P. V., Cappelli, M. A. 1996; 34 (4): 853-855

    View details for Web of Science ID A1996UC61100031

  • LIF characterization of arcjet nozzle flows 32nd Joint Propulsion Conference and Exhibit Storm, P. V., Cappelli, M. A. 1996

    View details for DOI 10.2514/6.1996-2987

  • Plasma and Cathode Emission from a High Power Hydrogen Arcjet Thruster 32nd Joint Propulsion Conference and Exhibit Berns, D. H., Storm, P. V., Hargus, Jr., W. A., Cappelli, M. A., McFall, K. A., Spores, R. A. 1996

    View details for DOI 10.2514/6.1996-2703

  • DIAMOND FILM SYNTHESIS IN LOW-PRESSURE PREMIXED METHANE-OXYGEN FLAMES APPLIED PHYSICS LETTERS Kim, J. S., Cappelli, M. A. 1995; 67 (8): 1081-1083

    View details for Web of Science ID A1995RQ00200013

  • EXPERIMENTAL INVESTIGATION OF VELOCITY SLIP NEAR AN ARCJET EXIT PLANE AIAA JOURNAL LIEBESKIND, J. G., Hanson, R. K., Cappelli, M. A. 1995; 33 (2): 373-375

    View details for Web of Science ID A1995QK49200029

  • AN EXPERIMENTAL-STUDY OF THE TEMPERATURE AND STOICHIOMETRY DEPENDENCE OF DIAMOND GROWTH IN LOW-PRESSURE FLAT FLAMES JOURNAL OF MATERIALS RESEARCH Kim, J. S., Cappelli, M. A. 1995; 10 (1): 149-157

    View details for Web of Science ID A1995PY82100021

  • NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF LOW-DENSITY SUPERSONIC JETS OF HYDROGEN JOURNAL OF FLUID MECHANICS Boyd, I. D., Beattie, D. R., Cappelli, M. A. 1994; 280: 41-67

    View details for Web of Science ID A1994QA08600002

  • DIAMOND FILM GROWTH IN LOW-PRESSURE PREMIXED ETHYLENE-OXYGEN FLAMES APPLIED PHYSICS LETTERS Kim, J. S., Cappelli, M. A. 1994; 65 (22): 2786-2788

    View details for Web of Science ID A1994PU40400010

  • 2ND-ORDER RAMAN-SCATTERING IN DIAMOND UP TO 1900 K PHYSICAL REVIEW B HERCHEN, H., Cappelli, M. A. 1994; 49 (5): 3213-3216

    View details for Web of Science ID A1994MW34900029

  • In-situ mass sampling during supersonic arcjet synthesis of diamond Diamond and Related Materials Cappelli, M. A., Loh, M. H. 1994; 3 (4–6): 417–421

    View details for DOI 10.1016/0925-9635(94)90195-3

  • A MULTI-FLUID STAGNATION-FLOW PLASMA MODEL WITH SELF-CONSISTENT TREATMENT OF THE COLLISIONAL SHEATH IEEE TRANSACTIONS ON PLASMA SCIENCE Meeks, E., Cappelli, M. A. 1993; 21 (6): 768-777

    View details for Web of Science ID A1993MQ94100019

  • LASER-INDUCED FLUORESCENCE DIAGNOSTIC FOR TEMPERATURE AND VELOCITY-MEASUREMENTS IN A HYDROGEN ARCJET PLUME APPLIED OPTICS LIEBESKIND, J. G., Hanson, R. K., Cappelli, M. A. 1993; 32 (30): 6117-6127

    Abstract

    A diagnostic has been developed to measure velocity and translational temperature in the plume of a 1-kW-class arcjet thruster operating on hydrogen. Laser-induced fluorescence with a narrow-band cw laser is used to probe the Balmer α transition of excited atomic hydrogen. The velocity is determined from the Doppler shift of the fluorescence excitation spectrum, whereas the temperature is inferred from the lineshape. Analysis shows that although Doppler broadening is the only significant broadening mechanism, the fine structure of the transition must be taken into account. Near the exit plane, axial velocities vary from 4 to 14 km/s, radial velocities vary from 0 to 4 km/s, and swirl velocities are shown to be relatively small. Temperatures from 1000 to 5000 K indicate high dissociation fractions.

    View details for Web of Science ID A1993MC05300035

    View details for PubMedID 20856439

  • TEMPERATURE-DEPENDENCE OF THE CUBIC BORON-NITRIDE RAMAN LINES PHYSICAL REVIEW B HERCHEN, H., Cappelli, M. A. 1993; 47 (21): 14193-14199

    View details for Web of Science ID A1993LF72900029

  • 2 PRECURSOR MODEL FOR LOW-PRESSURE CHEMICAL-VAPOR-DEPOSITION OF SILICON DIOXIDE FROM TETRAETHYLORTHOSILICATE JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B ISLAMRAJA, M. M., Chang, C., McVittie, J. P., Cappelli, M. A., Saraswat, K. C. 1993; 11 (3): 720-726

    View details for Web of Science ID A1993LH22800029

  • 2-TEMPERATURE FLUID MODEL FOR HIGH-PRESSURE PLASMAS IN CONTACT WITH COOLED ELECTRODES JOURNAL OF APPLIED PHYSICS Meeks, E., Cappelli, M. A. 1993; 73 (7): 3172-3182

    View details for Web of Science ID A1993KV03100009

  • THE NONEQUILIBRIUM REGION OF AN ELECTRODE IN CONTACT WITH A FLOWING THERMAL PLASMA IEEE TRANSACTIONS ON PLASMA SCIENCE Cappelli, M. A. 1993; 21 (1): 194-201

    View details for Web of Science ID A1993LD70900027

  • Characterization of a supersonic hydrogen arcjet plasma thruster employed in diamond film synthesis 29th Joint Propulsion Conference and Exhibit Loh, M. H., Liebskind, J. G., Cappelli, M. A. 1993

    View details for DOI 10.2514/6.1993-2227

  • A comparison of arcjet plume properties to model predictions 31st Aerospace Sciences Meeting Cappelli, M. A., Liebeskind, J. G., Hanson, R. K., Butler, G. W., Redmond, W. A., King, D. Q. 1993

    View details for DOI 10.2514/6.1993-820

  • Temperature dependence of the cubic boron nitride Raman lines Physical Review B Herchen, H., Cappelli, M. A. 1993; 47 (21): 14193–14199

    View details for DOI 10.1103/PhysRevB.47.14193

  • Two precursor model for low‐pressure chemical vapor deposition of silicon dioxide from tetraethylorthosilicate Journal of Vacuum Science & T IslamRaja, M. M., Chang, C., McVittie, J. P., Cappelli, M. A., Sarawat, K. C. 1993; 11 (3): 720 - 726

    View details for DOI 10.1116/1.586778

  • A MODEL OF DIAMOND GROWTH IN LOW-PRESSURE PREMIXED FLAMES JOURNAL OF APPLIED PHYSICS Kim, J. S., Cappelli, M. A. 1992; 72 (11): 5461-5466

    View details for Web of Science ID A1992KA93200066

  • A 3-DIMENSIONAL MODEL FOR LOW-PRESSURE CHEMICAL-VAPOR-DEPOSITION STEP COVERAGE IN TRENCHES AND CIRCULAR VIAS JOURNAL OF APPLIED PHYSICS ISLAMRAJA, M. M., Cappelli, M. A., McVittie, J. P., Saraswat, K. C. 1991; 70 (11): 7137-7140

    View details for Web of Science ID A1991GU04900074

  • 1ST-ORDER RAMAN-SPECTRUM OF DIAMOND AT HIGH-TEMPERATURES PHYSICAL REVIEW B HERCHEN, H., Cappelli, M. A. 1991; 43 (14): 11740-11744

    View details for Web of Science ID A1991FM46300021

  • First-order Raman spectrum of diamond at high temperatures Physical Review B Herchen, H., Cappelli, M. A. 1991; 43 (14): 11740–11744

    View details for DOI 10.1103/PhysRevB.43.11740

  • HIGH GROWTH-RATE DIAMOND SYNTHESIS IN A LARGE AREA ATMOSPHERIC-PRESSURE INDUCTIVELY COUPLED PLASMA JOURNAL OF MATERIALS RESEARCH Cappelli, M. A., Owano, T. G., Kruger, C. H. 1990; 5 (11): 2326-2333

    View details for Web of Science ID A1990EH57600008

  • LASER-INDUCED FLUORESCENCE IMAGING OF LASER-ABLATED BARIUM APPLIED PHYSICS LETTERS Cappelli, M. A., Paul, P. H., Hanson, R. K. 1990; 56 (18): 1715-1718

    View details for Web of Science ID A1990DB07100001

  • AN INVESTIGATION OF DIAMOND FILM DEPOSITION IN A PREMIXED OXYACETYLENE FLAME JOURNAL OF APPLIED PHYSICS Cappelli, M. A., Paul, P. H. 1990; 67 (5): 2596-2602

    View details for Web of Science ID A1990CR96900062

  • ELECTRON-DENSITY RADIAL PROFILES DERIVED FROM STARK-BROADENING IN A SODIUM PLASMA PRODUCED BY LASER RESONANCE SATURATION APPLIED OPTICS Cappelli, M. A., Measures, R. M. 1987; 26 (6): 1058-1067

    Abstract

    The first free electron density radial profiles of a sodium plasma created by laser resonance saturation are reported. The measurements were based on Stark broadening, of the 4(2)D-3(2)P multiplet and reveal the formation of a conically shaped plasma along the path of the laser pulse, which can be attributed to strong absorption of the laser pulse along the ionization path.

    View details for Web of Science ID A1987G929900019

    View details for PubMedID 20454270

  • SODIUM ATOM DISTRIBUTION WITHIN A HEAT SANDWICH OVEN REVIEW OF SCIENTIFIC INSTRUMENTS Cappelli, M. A., CARDINAL, P. G., HERCHEN, H., Measures, R. M. 1985; 56 (11): 2030-2034

    View details for Web of Science ID A1985ATS8900006

  • 2-CHANNEL TECHNIQUE FOR STARK MEASUREMENTS OF ELECTRON-DENSITY WITHIN A LASER-PRODUCED SODIUM PLASMA APPLIED OPTICS Cappelli, M. A., Measures, R. M. 1984; 23 (13): 2107-2114

    View details for Web of Science ID A1984SY73300020

    View details for PubMedID 18212956

  • Laser-induced breakdown stabilization of non-premixed jet diffusion flames Bulletin of the American Physical Society Bak, M. S., Cappelli, M. A. 2012; 57 (8)
  • Characteristics of low frequency air glow dielectric barrier discharges at atmospheric pressure Hwang, N., Im, S., Bak, M. S., Cappelli, M. A. 2012
  • Cross-Field Transport of Electrons in Hall Plasma Accelerators Cappelli, M. A. 2012
  • Advanced Plasma Propulsion DTIC Document Choueiri, E., Cappelli, M. A., Martinez-Sanchez, M. M., Hallock, A., Gildea, S., Matlock, T. 2011
  • Experimental Study of Supersonic Inlet Flow Unstart Induced by Mass Injection Bulletin of the American Physical Society Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011
  • Quenching of electronically excited states of molecular nitrogen in nanosecond repetitive pulsed discharges in atmospheric pressure air Bulletin of the American Physical Society Bak, M. S., Cappelli, M. A. 2011; 56 (15)
  • Laminar lean premixed methane/air combustion near the lean flammability limit using nanosecond repetitive pulsed discharge plasmas Bulletin of the American Physical Society Bak, M. S., Do, H., Mungal, M. G., Cappelli, M. A. 2011
  • SUPERSONIC INLET DUCT UNSTART INDUCED BY FUEL JET INJECTION 7th International Symposium on Turbulence and Shear Flow Phenomena Do, H., Im, S., Mungal, M. G., Cappelli, M. A. 2011
  • Advanced Plasma Propulsion PRINCETON UNIV NJ Choueiri, E., Cappelli, M. A., Martinez-Sanchez, M., Hallock, A., Gildea, S., Matlock, T. 2011: 145
  • Predicting Electron Transport Using Simulated Axial Waves in a Radial-Axial Hybrid Hall Thruster Model Technical paper Scharfe, M. K., Cappelli, M. A., Fernandez, E. 2009
  • Laser-Induced Fluorescence Velocity Measurements of a Low Power Cylindrical Hall Thruster DTIC Document MacDonald, N. A., Cappelli, M. A., Hargus Jr, W. A. 2009
  • Experimental Characterization of High Frequency Instabilities within the Discharge Channel of a Hall Thruster 31st International Electric Propulsion Conference Knoll, A. K., Cappelli, M. A. 2009
  • Bismuth Hall thruster I: Simulation-suggested design and performance Journal of Technical Physics Scharfe, D. B., Scharfe, M. K., Cappelli, M. A. 2008; 3–4 (49): 329–348
  • Bismuth Hall thruster II: Simulated diagnostics Journal of Technical Physics Scharfe, D. B., Cappelli, M. A. 2008; 49 (3-4): 349-361
  • Role of Negative Ions and Crosstalk in DBD Flow Actuation Bulletin of the American Physical Society Mungal, M. G., Do, H., Kim, W., Cappelli, M. A. 2008
  • Towards Reduced Wall Effect Hall Plasma Accelerators Cappelli, M. A. 2007
  • Preliminary Study of Arcjet Neutralization of Hall Thruster Clusters (Postprint) Walker, Quentin, E., Cappelli, Mark, A., Hargus, William, A. 2007
  • Millimeter Wave Plasma Interferometry in the Near Field of a Hall Plasma Accelerator (PREPRINT) DTIC Document Cappelli, M. A., Gascon, N. C., Hargus, W. 2006
  • Ultra-Low Power Stationary Plasma Thruster 29th International Electric Propulsion Conference Gascon, N., Crawford, W. S., Cappelli, M. A. 2005
  • Stationary reference Bi discharge cell for optical diagnostics of a bismuth Hall thruster 29th International Electric Propulsion Conference Scharfe, D. B., Cappelli, M. A. 2005
  • A Two-Dimensional Hybrid (z-theta) Simulation of Coaxial Hall Thrusters 29th International Electric Propulsion Conference Fernandez, E., Knoll, A. K., Tarik, K., Cappelli, M. 2005
  • Hall thruster with an external acceleration zone DTIC Document Gascon, N., Corey, R. L., Cappelli, M. A., Hargus, W. 2005
  • Effect of Charge Exchange on 2D Hall Thruster Simulation 29th International Electric Propulsion Conference Allis, M. K., Gascon, N., Cappelli, M. A. 2005
  • Hall Thruster With an External Acceleration Zone AIR FORCE RESEARCH LAB EDWARDS AFB CA SPACE AND MISSILE PROPULSION DIV Gascon, N., Corey, Ronald, L., Cappelli, Mark, A., Hargus, W. 2005: 8
  • Non-local electric field effects in magnetized plasmas 29th International Electric Propulsion Conference Gascon, N., Allis, M., Sommier, E., Cappelli, M. A. 2005
  • A Two-Dimensional (z-θ) Fluid/PIC Simulation of Coaxial Hall Thrusters 29th International Electric Propulsion Conference Fernandez, E., Knoll, A., Cappelli, M. A., Kaya, T. 2005
  • Wall effects on the excitation and propagation of instabilities in Hall thrusters Gascon, N., Capelli, M. A. 2003
  • Preliminary Study of Arcjet Neutralization of Hall Thruster Clusters Walker, Q. E., Cappelli, M. A., Hargus Jr, W. A., Schilling, J. 2001
  • Linear geometry Hall thruster with boron nitride and diamond walls Gascon, N., Cappelli, M. A. 2001
  • Advanced Optical and Electrostatic Characterization of Closed-Electron Drift Thrusters Cappelli, Mark, A. 2001
  • Performance studies of a colloid thruster system Pranajaya, F. M., Cappelli, M. A. 2001
  • Characterization of Inert Gas Plasma Thrusters Cappelli, M. 2000
  • A Linear Stability Analysis of a Magnetized Hall Plasma Discharge American Physical Society, 42nd Annual Meeting of the APS Division of Plasma Physics combined with the 10th International Congress on Plasma Physics October 23 - 27, 2000 Québec City, Canada Meeting ID: DPP00 Cappelli, Mark, A., Chesta, E., Meezan, Nathan, B. 2000
  • Interior and Exterior Laser-Induced Fluorescence and Plasma Potential Measurements on a Laboratory Hall Thruster (Postprint) DTIC Document Hargus Jr, W. A., Cappelli, M. A. 1999
  • The Breakdown and Vacuum Emission Characteristics of a High Surface Area to Volume Ratio Discharge American Physical Society, Gaseous Electronics Conference Postel, O. B., Cappelli, M. A. 1999
  • Dispersion of Low-Frequency Azimuthal Waves in Hall Discharges American Physical Society, 41st Annual Meeting of the Division of Plasma Physics Cappelli, M. A., Schmidt, D. P., Meezan, N. B. 1999
  • Electrical and VUV/Vis. Emission Characteristics of a Xe/He microdischarge American Physical Society, 41st Annual Meeting of the Division of Plasma Physics Cappelli, M. A., Postel, O. B. 1999
  • Measurements of Ion Energy and Ion Flux Distributions in Inductively Coupled Plasmas in CF4/O2/Ar Mixtures Rao, M., V. V. S., Kim, J., S., Cappelli, M., A., Sharma, S., P. 1999
  • Anomalous Transport in Closed-Drift Hall Discharges American Physical Society, 41st Annual Meeting of the Division of Plasma Physics Meezan, N., B., Cappelli, Mark, A. 1999
  • CF2 Detection in Radio-Frequency Ar/CHF3 Plasmas by Fourier Transform Infrared Spectroscopy American Physical Society, Gaseous Electronics Conference Kim, J. S., Rao, M. V., Cappelli, M. A., Sharma, S. P. 1999
  • Langmuir Probe Distortions and Probe Compensation in an Inductively Coupled Plasma Ji, J. S., Cappelli, M. A., Kim, J. S., Rao, V., S. M 1999
  • Laser-Induced Fluorescence Measurements within a Laboratory Hall Thruster (Postprint) Hargus Jr., W., A., Cappelli, M., A. 1999
  • CH3 and CFx Detection in Low Pressure RF Discharges by Broadband Ultraviolet Absorption Spectroscopy Cappelli, M., A., Kim, J., S., Sharma, S., P. 1998
  • In Situ CF3 Detection in Low Pressure RF Discharges by Fourier Transform Infrared Spectroscopy Kim, J., S., Cappelli, M., A., Sharma, S., P. 1998
  • Laser Induced Fluorescence Measurements on a Laboratory Hall Thruster (Postprint) stormingmedia.us Cappelli, M. A., Hargus, J. 1998: 12
  • Ion Energy Distributions and their Relative Abundance in Inductively Coupled Plasmas 51st Annual Gaseous Electronics Conference & 4th International Conference on Reactive Plasmas Kim, J. S., Rao, M. V., Cappelli, M. A., Sharma, S. P. 1998
  • Oscillatory Behavior in Closed-Drift Hall Plasma Discharges American Physical Society, Division of Plasma Physics Meeting Cappelli, M., A., Meezan, N., B., Hargus Jr, W., H. 1998
  • 2D simulations of Hall thrusters CTR Annual Research Briefs Fernandez, E., Cappelli, M. A., Mahesh, K. 1998
  • Laser Induced Fluorescence Measurements on a Laboratory Hall Thruster (Postprint) Hargus Jr, W. A., Cappelli, M. A. 1998
  • Fundamental Studies of the Electrode Regions in Arcjet Thrusters Cappelli, Mark, A. 1998
  • Langmuir Probe Measurements in an Inductively Coupled GEC Reference Cell Plasma APS Meeting Abstracts Ji, J. S., Kim, J. S., Cappelli, M. A., Sharma, S., P. 1998
  • The Stability of Arc Attachment in Arcjet Propulsion Devices. STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING Cappelli, Mark, A., Yuan, B. 1997: 93
  • A study of a Low Power Hall thruster transient Behavior International Electric Hargus Jr., W., A., Meezan, N. B., Cappelli, M. A. 1997
  • Fundamental Studies of the Near-Electrode Regions in Arcjet Thrusters. Cappelli, Mark, A. 1995
  • A Direct Comparison of Hydrogen Arcjet Thruster Properties to Model Predictions 23rd Int. Elec. Prop. Conf Cappelli, M. A., Liebeskind, J. G., Hanson, R. K., Butler, G. W., King, D. Q. 1993
  • Optical diagnostics of a low power hydrogen arcjet International Electric Cappelli, M. A., Hanson, R. K., Liebeskind, J. G., Manzella, D. H. 1991
  • An investigation of diamond synthesis in an oxygen-acetylene diffusion flame Cappelli, M., A. 1990
  • Development of optical diagnostics for performance evaluation of arcjet thrusters Final Report, High Temperature Gasdynamics Lab. Cappelli, Mark, A. 1989

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