# Conference

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- A. C. Denig and K. Hara, “Ion Temperature Effects on Electrostatic Instabilities in Partially Magnetized Plasmas”, 66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 2024.
- K. Hara, “State and parameter estimation using data assimilation for plasma dynamics and chemistry”, 66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 2024. (invited talk)
- D. Kuldinow, Y. Yamashita, and K. Hara, “A 10-moment multi-fluid model for partially magnetized plas- mas”, 66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 2024.
- D. Kuldinow, W. Taitano, L. Chacon, and K. Hara, “Development of a moment-conditioned, asymptotic pre- serving and mass, momentum and energy-conserving Particle-in-Cell solver for the Vlasov-Amp ́ere system”, 66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 2024. (poster)
- A. Gerakis, G. F. Alfaro, R. Randolph, S. Suzuki, M. Kounalakis, S. Karatodorov, D. Pai, M. Simeni, P. Bruggeman, K. Hara, and M. Shneider, “Four-wave mixing diagnostics for neutrals, ions and electrons in low (and high) temperature plasmas”, 66th Annual Meeting of the APS Division of Plasma Physics, Atlanta, GA, October 2024.
- M. Lee, K.-J. Chung, K. Hara, and J.-Y. Kim, “Discharge Mode Transition in Partially Magnetized E×B Penning Discharge”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. Alvarez-Laguna, K. Hara, A. Berger, A. Bourdon, and P. Chabert, “High-order moment closures for fluid models in weakly-ionized plasmas”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. Gerakis, G. F. Alfaro, S. Suzuki, R. Randolph, J. Bak, M. Kounalakis, S. Karatodorov, M. Mitrou, D. Pai, M. Simeni, P. Bruggeman, K. Hara, and M. Shneider, “Four-wave mixing diagnostics for neutrals, ions and electrons in low (and high) temperature plasmas”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. Alvarez-Laguna and K. Hara, “A moment model for radio-frequency plasmas”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024. (poster)
- S. Suzuki, M. Shneider, and K. Hara, “Development of a self-consistent, electrified shallow water model cou- pled with Poisson solver”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024. (poster)
- K. Shirasu, K. Hara, H. Koizumi, “Estimation of cross-field electron mobility in a water-vapor Hall thruster”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024. (poster)
- A. R. Mansour, K. Hara, and Y. Jo, “RF Plasma Simulations using Full-Fluid Moment Model”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024. (poster)
- Y. Yamashita, V. Sharma, S. Sriraman, and K. Hara, “Particle-based kinetic simulations of dual-frequency RF breakdown”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024. (poster)
- A. R. Mansour and K. Hara, “Full-Fluid Moment Model for Gas Breakdown and Low Temperature, Partially Magnetized Plasmas”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. Dwivedi and K. Hara, “Optical emission spectroscopy-based estimation of plasma parameters with en- semble Kalman filtering”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. Dwivedi, M. J. Cerepi, and K. Hara, “Spatio-temporal parameter estimation using data assimilation for plasma dynamics”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. C. Denig and K. Hara, “Three-Dimensional Particle-in-Cell Simulation of Kinetic Instabilities in Partially Magnetized Plasmas”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- L. Vialetto and K. Hara, “Fluid modeling of surface dielectric barrier discharges to understand bulk and surface phenomena”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- K. Hara, Y. Yamashita, and S. Sriraman, “Computational modeling of hysteresis between Townsend and glow regimes”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- V. Sharma, K. Bera, S. Rauf, and K. Hara, “Plasma dynamics of RF multi-trench hollow cathode discharge using hybrid plasma model”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- V. Sharma, A. M. Castillo, Y. Yamashita, and K. Hara, “Impedance collapse in a high-voltage diode due to anode and cathode plasma formation and expansion”, 77th Annual Gaseous Electronics Conference, San Diego, October 2024.
- A. Dwivedi and K. Hara, “Estimation of plasma properties using ensemble Kalman filtering with plasma global models and spectroscopic measurements”, 5th International Conference on Data-Driven Plasma Sci- ence, Berkeley, CA, August 2024. (poster)
- K. Hara, A. Dwivedi, and M. J. Cerepi, “State and parameter estimation of partial differential equations for plasmas”, 5th International Conference on Data-Driven Plasma Science, Berkeley, CA, August 2024.D. A. Kuldinow, Y. Yamashita, and K. Hara, "Development of a 10-moment multi-fluid model for low temperature magnetized plasmas”, 33rd Symposium on Rarefied Gas Dynamics, Gottingen, Germany, July 2024.
- S. Suzuki and K. Hara, "Elastic electron-neutral collision effect on cross-field electron transport", IEPC-2024-541, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- A. Alvarez-Laguna and K. Hara, "Self-consistent collisional closures for high-order fluid moment models with the electron inertial terms for Hall thrusters", IEPC-2024-685, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- K. Hara, "Data assimilation techniques for plasma dynamics and chemistry for electric propulsion systems", IEPC-2024-710, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- K. Hara, T. Zivre, Y. Yamashita, D. E. Troyetsky, D. Jovel, J. Cabrera, M. Walker, "Model Based Extrapolation of Hall Thruster Electrical Impedance between Test Facilities", IEPC-2024-711, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- D. E. Troyetsky, A. Lopez-Ortega, and K. Hara, "Automated calibration of the anomalous electron collision frequency profile in one-dimensional Hall effect thruster simulations", IEPC-2024-768, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- D. E. Troyetsky and K. Hara, "Development of a two-dimensional axial-radial full-fluid moment Hall effect thruster model", IEPC-2024-765, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- A. C. Denig and K. Hara, "Partially Magnetized Plasma Instabilities in a Three-Dimensional Particle-in-Cell Simulation", IEPC-2024-852, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- S. Tsikata, T. Dubois, and K. Hara, "Insights from combined optical diagnostics and numerical analyses of Hall thruster turbulence", IEPC-2024-862, 38th International Electric Propulsion Conference, Toulouse, France, June 2024.
- H. Wang, J. Li, A. Dwivedi, K. Hara, and T. Wu, "BENO: Boundary-embedded Neural Operators for Elliptic PDEs", 12th International Conference on Learning Representations (ICLR), Vienna, Austria, May 2024. (peer-reviewed for poster presentation)
- A. R. Mansour, L. Vialetto, Y. Yamashita, and K. Hara, "Modified Theory and Fluid Modeling for DC Breakdown", 11th International Workshop on the Mechanisms of Vacuum Arcs (MeVArc), Tahoe City, CA, March 2024
- V. Sharma, A. M. Castillo, Y. Yamashita, and K. Hara, “Relativistic 1D PIC-MCC modeling and simulation of impedance collapse in high-voltage diodes,” 11th International Workshop on the Mechanisms of Vacuum Arcs (MeVArc), Tahoe City, CA, March 2024
- H. Wang, J. Li, A. Dwivedi, K. Hara, and T. Wu, "BENO: Boundary-embedded Neural Operators for Elliptic PDEs", 37th Conference on Neural Information Processing Systems (NeurIPS), AI for Science workshop, New Orleans, LA, December 2023. (peer-reviewed for oral presentation)
- K. Hara and Y. Yamashita, "Particle-in-Cell Monte Carlo Collision Modeling of Low-Pressure Plasma Discharges", AVS 69th International Symposium & Exhibition, Portland, OR, November 2023.
- A. Castillo and K. Hara, “Monotonic sheath conditions of partially magnetized plasma sheaths”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- A. Denig and K. Hara, “Finite Ion Temperature Effects on Three-Dimensional Kinetic Instabilities in Partially Magnetized Plasmas”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- A. R. Mansour, Y. Yamashita, and K. Hara, “Full-fluid Moment Modeling and Theory of DC Breakdown”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- K. Hara, A. R. Mansour, and S. Tsikata, “Gradient-drift instability in partially ionized, partially magnetized plasmas”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- D. Kuldinow Y. Yamashita, and K. Hara, “A 10-moment multi-fluid model for partially ionized, partially magnetized plasmas”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- D. Kuldinow, W. Taitano, and K. Hara, “Development of a charge- and energy-conserving implicit moment-acceleration method for the Vlasov-Darwin Particle-in-Cell System”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- M. Cerepi and K. Hara, “Data-driven state estimation of 1D partial differential equation for plasma applications”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- V. Sharma, A. M. Castillo, Y. Yamashita, and K. Hara, “Modeling of plasma formation and expansion in a high-voltage anode-cathode gap”, 65th Annual Meeting of the APS Division of Plasma Physics, Denver, CO, November 2023.
- Y. Yamashita, K. Hara, and S. Sriraman, “One-dimensional and two-dimensional particle-based kinetic simulations of DC and RF gas breakdown”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- M. Lee, K.-J. Chung, K. Hara, and J.-Y. Kim, “Characteristics of Mode Transition of Partially Magnetized Plasmas in a E×B Penning discharge”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- S. Suzuki, A. Gerakis, and K. Hara, “Direct simulation Monte Carlo of single-shot coherent Rayleigh- Brillouin scattering”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023 (poster)
- T. Zivre and K. Hara, “Data-Driven Estimation of Background Pressure Effect on Thrust in Hall Effect Thrusters”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- D. E. Troyetsky and K. Hara, “Two-dimensional full-fluid moment simulations of partially magnetized ExB plasmas ”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023 (poster)
- D. Kuldinow Y. Yamashita, and K. Hara, “A 10-Moment Multi-Fluid Model for Low-Temperature Partially Magnetized Plasmas”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023
**.** - A. R. Mansour, Y. Yamashita, and K. Hara, “Revisiting Paschen Theory for DC Breakdown”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- A. R. Mansour, A. Alvarez-Laguna, and K. Hara, “Improved Closure Models for Fluid Moment Modeling of Capacitively Coupled Plasmas”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- A. Alvarez-Laguna and K. Hara, “Collisional closures for high-order moment partially-ionized plasma models with the electron inertial terms”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- K. Hara, Y. Yamashita, and S. Rauf, “Theory and simulations of cylindrical plasma sheaths”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- K. Hara and A. Alvarez-Laguna, “Effects of runaway electrons in partially ionized plasmas”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023 (poster).
- M. S. Mokrov, K. Hara, and M. N. Shneider, “Dynamics of charged liquid surface using a shallow water approach”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- R. Randolf, S. Suzuki, K. Hara, and A. Gerakis, “Single shot, non-resonant, four-wave mixing laser diagnos- tics for low temperature plasmas”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023 (poster)
- A. M. Castillo, M. Hopkins, A. Lietz, and K. Hara, “Plasma chemistry modelling of SF6 replacement gas for high voltage switches”, 76th Annual Gaseous Electronics Conference, Ann Arbor, MI, October 2023.
- R. Randolf, S. Suzuki, K. Hara, and A. Gerakis, “Single shot, non-resonant, four-wave mixing laser diagnostics of heavy species in low temperature plasmas", XXXV ICPIG, Egmond aan Zee, Netherlands, July 2023
- S. Suzuki, A. Gerakis, and K. Hara, “Direct Simulation Monte Carlo of single-shot coherent Rayleigh Brillouin scattering”, XXXV ICPIG, Egmond aan Zee, Netherlands, July 2023 (poster)
- A. M. Castillo, A. Lietz, M. Hopkins, and K. Hara, “Plasma global model of Novec 4710/CO2 mixture for high voltage switches”, IEEE Pulsed Power Conference 2023, San Antonio, TX, June 2023
- V. Sharma, Y. Yamashita, A. M. Castillo, and K. Hara, “1D PIC-MCC modeling of cathode plasma formation and expansion in vacuum diodes”, IEEE Pulsed Power Conference 2023, San Antonio, TX, June 2023
- Y. Yamashita, S. Gimelshein, and K. Hara, “Cylindrical Particle-in-Cell Simulation and Orbital Motion Limited Theory for Langmuir Probe”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- V. Sharma, Y. Yamashita, A. M. Castillo, and K. Hara, “Towards self-consistent modeling of cathode plasma formation and expansion”, 50th IEEE ICOPS, Santa Fe, NM, May 2023 (poster)
- A. C. Denig and K. Hara, “Finite Ion Temperature Effects on Three-Dimensional Coupled Kinetic Instabilities in Partially Magnetized Plasmas”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- M. Cerepi and K. Hara, “Estimating 1D Dynamical Plasma Parameters Using Data-driven Techniques”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- S. Suzuki, A. Gerakis, and K. Hara, “Computational modeling of coherent Rayleigh-Brillouin scattering (CRBS) for partially ionized plasmas”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- D. E. Troyetsky, C. M. Greve, S. Tsikata, and K. Hara, “State estimation of anomalous electron transport in a Hall-effect thruster discharge”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- A. R. Mansour and K. Hara, “Two-dimensional Axisymmetric Fluid Modeling for Low-Temperature Plasma Applications”, 50th IEEE ICOPS, Santa Fe, NM, May 2023 (poster)
- A. M. Castillo and K. Hara, “Particle-in-cell simulation of magnetized plasma sheath”, 50th IEEE ICOPS, Santa Fe, NM, May 2023 (poster)
- D. A. Kuldinow and K. Hara, “10-moment fluid simulation of cross-field plasmas”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- W. H. R. Chan, K. Hara, and I. D. Boyd, “Energy exchange in multidimensional current-driven instabilities in hollow cathode plumes”, 50th IEEE ICOPS, Santa Fe, NM, May 2023
- W. H. R. Chan, K. Hara, J. M. Wang, S. S. Jain, K. P. Griffin, I. D. Boyd, "Spectral analysis of current-driven instabilities relevant to anomalous transport in hollow cathode plumes", 64th APS Division of Plasma Physics, Spokane, WA, Oct 2022
- A. M. Castillo and K. Hara, "Kinetic simulation of magnetized plasma sheaths with oblique magnetic fields", APS Far West Section Fall 2022 Meeting, Honolulu, HI, Oct 2022
- A. Alvarez-Laguna, A. R. Mansour, Y. Yamashita, A. Bourdon, P. Charbel, and K. Hara, "Simulation of an inductively coupled RF discharge using fluid moment models", DR1.00001, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- D. E. Troyetsky, C. M. Greve, S. Tsikata, and K. Hara, "Data-Driven Estimation of Electrical Facility Effects on Anomalous Electron Transport in Hall Effect Thrusters", DR4.00001, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- Y. Yamashita, R. Lau, and K. Hara, "Investigation of cross-field electron transport in Hall Effect Thrusters using 1D axial PIC/MCC simulation", DR4.00005, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- Y. Yamashita, K. Hara, and S. Sriraman, "One-dimensional Particle-based Kinetic Simulations of DC and RF gas breakdown", FF4.00003, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- K. Hara, "Instabilities and turbulent processes in low-temperature magnetized plasmas", FR2.00001, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- A. Alvarez-Laguna and K. Hara, "High-order moment closure for partially-ionized plasmas", GR4.00001, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- D. Kuldinow, A. R. Mansour, and K. Hara, "Development of a 10-Moment Multi-Fluid Model for Low-Temperature Magnetized Plasmas", GR4.00002, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- S. Suzuki, R. Randolph, A. Gerakis, and K. Hara, "Fluid modeling and coherent Rayleigh-Brillouin scattering measurements of gas temperature in a xenon DC glow discharge plasma", IF2.00008, 75th Annual Gaseous Electronics Conference, Sendai, Japan, Oct 2022
- D. Kuldinow and K. Hara, "Application of a 10-Moment Fluid Model to Transition Neutral and Plasma Flows", 32nd International Symposium on Rarefied Gas Dynamics, Seoul, South Korea, July 2022
- C. M. Greve and K. Hara, "Real-time State Estimation for Plasma Chemistry Applications", 32nd International Symposium on Rarefied Gas Dynamics, Seoul, South Korea, July 2022
- S. Tsikata and K. Hara, “Coexistence of small-scale instabilities in Hall thrusters and hollow cathodes”, IEPC-2022-127, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- D. Kuldinow and K. Hara, “Ten-Moment Fluid Model for low temperature magnetized plasmas”, IEPC- 2022-327, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- D. Troyetsky, C. M. Greve, and K. Hara, “State estimation for real-time analysis of dynamic plasma properties and electrical facility effects in Hall effect thrusters”, IEPC-2022-323, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- C. M. Greve, D. Troyetsky, and K. Hara, “Real-Time Estimation of Electron Mobility in Hall Effect Thruster Models”, IEPC-2022-342, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- Y. Yamashita, R. Lau, and K. Hara, “Kinetic Effects of Cross-Field Plasma Discharge in Hall Effect Thrusters Using 1D Axial and 2D Axisymmetric Particle-in-Cell Models”, IEPC-2022-351, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- A. C. Denig and K. Hara, “Kinetic Model of Plasma Sheath Near a Dielectric-Coated Metal Wall”, IEPC- 2022-345, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- A. M. Castillo and K. Hara, “Kinetic modeling of plasma-wall interactions with magnetic field and secondary emission effects”, IEPC-2022-382, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- K. Hara, A. R. Mansour, A. C. Denig, and S. Tsikata, “Fluid and kinetic plasma instabilities in Hall effect thrusters”, IEPC-2022-333, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- S. Sewell, A. Sam, and K. Hara, “Theoretical Characterization of Fluctuation-Induced Electron Transport Across Magnetic Fields”, IEPC-2022-383, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- A. R. Mansour and K. Hara, “Full-Fluid Moment Modeling of Rotating Spokes”, IEPC-2022-348, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- A. R. Mansour and K. Hara, “Axisymmetric Full-Fluid Moment Model for Cylindrical Plasmas”, IEPC- 2022-390, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- K. Tang and K. Hara, “Quasi-1D Fluid Model for Hybrid Chemical-Plasma Propulsion Systems”, IEPC-2022-441, 37th International Electric Propulsion Conference, Cambridge, MA, June 2022
- A. C. Denig and K. Hara, “Three-Dimensional Kinetic Dispersion Relation of Partially Magnetized Plasma”, 49th IEEE ICOPS 2022, Seattle, WA, May 2022
- A. M. Castillo and K. Hara, “Kinetic simulation of plasma sheath relevant to cross-field diodes”, 49th IEEE ICOPS 2022, Seattle, WA, May 2022
- A. R. Mansour and K. Hara, “Two-Dimensional Full-Fluid Simulations for Low Temperature Rotating Spokes”, 49th IEEE ICOPS 2022, Seattle, WA, May 2022
- C. M. Greve and K. Hara, “Real-Time State Estimation of Plasma Parameters in Hall Effect Thruster Models”, 2022 AIAA SciTech Forum, AIAA 2022-1563, San Diego, CA, January 2022
- P. Kumar, S. T. Sewell and K. Hara, “Cross-field electron transport due to coupling of drift-driven microinstabilities in the presence of singly, doubly, and triply charged ion streams”, 2022 AIAA SciTech Forum, AIAA 2022-2192, San Diego, CA, January 2022
- A. M. Castillo, P. Kumar and K. Hara, “Computational modeling of a coupled light-particle beam propagation”, 2022 AIAA SciTech Forum, AIAA 2022-2261, San Diego, CA, January 2022
- D. Kuldinow, A. R. Mansour, and K. Hara, “Development of 10-moment Fluid Model for Plasma Simulations”, 2022 AIAA SciTech Forum, AIAA 2022-1564, San Diego, CA, January 2022
- C. Greve, K. Hara and M. Majji, "Application of State Estimation Methods to Low-Temperature Plasma Dynamics", 60th Conference on Decision and Control, December 2021 (virtual).
- P. Kumar, S. Tsikata, and K. Hara, “Cross-field electron transport due to coupling of drift-driven microinstabilities in the presence of singly, doubly, and triply charged ion streams” , 74th Annual Meeting of Gaseous Electronics Conference, October 2021 (virtual).
- P. Kumar, A. Castillo, A. Gerakis, and K. Hara, “Computational modeling of a nonlinearly coupled light and particle beam propagation” , 74th Annual Meeting of Gaseous Electronics Conference, October 2021 (virtual).
- K. Hara, T. Robertson, R. Lau, J. Kenney, and S. Rauf, “Development of a radial-axial particle-in-cell Monte Carlo collision model for capacitively coupled plasmas”, 74th Annual Meeting of Gaseous Electronics Conference, October 2021 (virtual).
- A. R. Mansour and K. Hara, "Two-Dimensional Full-Fluid Moment Model for Low-Temperature Magnetized Plasmas", 74th Gaseous Electronics Conference, October 2021 (virtual).
- R. Lau, and K. Hara, J. Kenney, and S. Rauf, "Instability-Induced Breakdown in Dual-Frequency Capacitively Coupled Plasmas", 74th Gaseous Electronics Conference, October 2021 (virtual).
- A. C. Denig and K. Hara, "Mutual Coupling of Electron Cyclotron Instability and Ion-Ion Two Stream Instability", 74th Annual Meeting of Gaseous Electronics Conference, Huntsville, AL, October 2021. (poster)
- C. Greve and K. Hara, "Real-time Estimation of Plasma Parameters using an Iterated Extended Kalman Filter", 74th Gaseous Electronics Conference, October 2021 (virtual).
- A. R. Mansour and K. Hara, "Two-Dimensional Full-Fluid Moment Model for Hall-Effect Thrusters", 48th IEEE International Conference on Plasma Science, September 2021 (virtual).
- C. Greve and K. Hara, "Real-Time Estimation of Discharge Current Oscillations Using an Iterated Extended Kalman Filter", 48th IEEE International Conference on Plasma Science, September 2021 (virtual).
- C. Greve and K. Hara, "Real-time Estimation of Plasma Dynamics Using an Extended Kalman Filter", AIAA 2021-3425, AIAA Propulsion and Energy Forum, August 2021 (virtual).
- A. R. Mansour and K. Hara, "Development of 2D Full-Fluid Moment Model for Partially-Magnetized Low-Temperature Plasmas", AIAA-2021-3412, AIAA Propulsion and Energy Forum, August 2021 (virtual).
- R. Lau, A. R. Mansour K. Hara, "A Comparison of 1D Particle-in-Cell and Fluid Models for Hall Effect Thrusters", AIAA-2021-3414, AIAA Propulsion and Energy Forum, August 2021 (virtual).
- A. C. Denig, K. Hara and S. Tsikata, "Three-Dimensional Coupling of Electron Cyclotron Drift Instability and Ion-Ion Two Stream Instability", AIAA 2021-3397, AIAA Propulsion and Energy Forum, August 2021 (virtual).
- A. Castillo, P. Kumar, and K. Hara, "Laser and Particle Coupled Beam Propagation for Deep Space Propulsion", AIAA 2021-3249, AIAA Propulsion and Energy Forum, August 2021 (virtual).
- K. Tang and K. Hara, "Numerical Study of Ionized Nozzle Flows with Electromagnetic Propulsion Enhancement", AIAA 2021-3111, AIAA Aviation 2021 Forum, August 2021 (virtual).
- P. Kumar and K. Hara, “Dynamics of nonlinearly coupled light and particle beam propagation”, K-07, Pre RGD32 workshop, virtual, July 2021 (virtual).
- C. Greve and K. Hara, "Real-Time State Estimation of Dynamic Plasma Processes", 3rd International Conference on Data-Driven Plasma Science, March 2021 (virtual).
- C. Greve and K. Hara, "State Estimation of a Global Plasma Chemistry Model Using an Extended Kalman Filter", Scientic Connections Conference, March 2021 (virtual).
- D. Andrienko, R. Sahu, A. Tropina, R. B. Miles and K. Hara, “Computational fluid dynamic model of electron transpiration cooling in weakly ionized air flows”, AIAA-2021-0684, AIAA Scitech 2021 Forum, January 2021.
- K. Hara and S. Tsikata, "Cross-field anomalous electron transport due to multidimensional plasma instabilities", 47th IEEE International Conference on Plasma Science (ICOPS-2020), December 2020 (virtual)
- C. Greve, A. Thomas, M. Majji, and K. Hara, "Data-Driven Global Model for Low Temperature Plasma Dynamics", 73rd Gaseous Electronics Conference, Oct 5-9. 2020 (virtual).
- W. Villafana, F. Petronio, M. Jimenez, A. Tavant, F. Taccogna, A. Smolyakov, A. Denig, K. Hara, A. Bourdon, P. Chabert, O. Vermorel, B. Cuenot."2D Radial-Azimuthal Particle-In-Cell Benchmark for ExB Discharges", 73rd Annual Gaseous Electronics Virtual Conference, Oct 5-9, 2020 (virtual).
- A. R. Mansour, C. L. Osgood, R. Sahu and K. Hara, "A Full-Fluid Model for Low-Temperature Magnetized Plasmas", the 73rd Annual Gaseous Electronics Conference, October 2020 (virtual).
- K. Hara and S. Tsikata, "Enhanced cross-field electron transport due to multidimensional plasma turbulence", 73rd Annual Gaseous Electronics Virtual Conference, Oct 5-9, 2020 (virtual).
- A. L. Raisanen, K. Hara, and I. D. Boyd, "Modeling a Two-Dimensional Plasma Sheath Using a Direct Kinetic Method", 73rd Annual Gaseous Electronics Virtual Conference, Oct 5-9, 2020 (virtual).
- A. R. Mansour, C. Osgood, R. Sahu, and K. Hara, "Development of a one-dimensional full-fluid moment model for Hall effect thrusters", AIAA-2020-3623, 2020 AIAA Propulsion and Energy Forum, August 2020 (virtual).
- A. Castillo, D. Kuldinow, and K. Hara, "Collisional effects in a laser and particle coupled beam", AIAA-2020-3519, 2020 AIAA Propulsion and Energy Forum, August 2020 (virtual).
- C. M. Greve, A. Thomas, M. Majji, and K. Hara, "Real-time Estimation of Electron Dynamics in Hall Effect Thrusters using an Extended Kalman Filter", AIAA-2020-3621, 2020 AIAA Propulsion and Energy Forum, August 2020 (virtual)
- A. Gerakis, M. Shneider, and K. Hara, “Velocity distribution function measurement of heavy species in weakly ionized plasma flows via coherent Rayleigh-Brillouin scattering”, PR3.00002, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019.
- A. R. Mansour and K. Hara, “A hydrodynamic model of ablating arc discharge in atmospheric pressure”, NR2.00004, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019.
- E. Cazzola and K. Hara, “Fully Implicit Particle-in-Cell Simulations of the Electron Cyclotron Drift Instability”, MW1.00025, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019. (poster)
- C. Greve and K. Hara, “A Data-Driven Approach to Model Calibration for Nonlinear Plasma Behavior”, MW1.00026, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019. (poster)
- R. Sahu and K. Hara, “Development of a Two Fluid Model for Low-Temperature Magnetized Plasmas”, UF3.00001, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019.
- K. Hara and S. Tsikata, “Plasma instabilities and cross-field electron transport in low-temperature magnetized plasmas”, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019.
- T. Charoy, J-P. Boeuf, A. Bourdon, P. Chabert, D. Eremin, L. Garrigues, K. Hara, A. Powis, A. Smolyakov, D. Sydorenko, A. Tavant, and W. Villafana, “2D axial-azimuthal Particle-In-Cell benchmark for low-temperature magnetized plasmas”, MW1.00028, the 72nd Annual Meeting of Gaseous Electronics Conference, College Station, TX, October 2019. (poster).
- S. Tsikata and K. Hara, “Plasma instabilities in cross-field configuration: an analysis of the relevance of different modes for electron transport”, IEPC-2019-758, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019.
- T. Charoy, J-P. Boeuf, A. Bourdon, P. Chabert, D. Eremin, L. Garrigues, K. Hara, I. Kaganovich, A. Powis, A. Smolyakov, D. Sydorenko, A. Tavant, and W. Villafana, “2D (axial-azimuthal) Particle-In-Cell benchmark for E×B discharges”, IEPC-2019-674, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019 (poster) Best poster award.
- K. Hara, Y. Yamashita, S. Tsikata, B. Vincent, and S. Cho “New insights into electron transport due to azimuthal drift in a Hall effect thruster”, IEPC-2019-691, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019.
- S. Cho, K. Kubota, H. Watanabe, K. Hara, and Y. Yamashita, “Investigation of cross-field electron transport in a 100-W class Hall Thruster using a full particle-in-cell simulation”, IEPC-2019-718, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019.
- Y. Yamashita, C. Gonzalez, K. Hara, S. Cho, and K. Nishiyama, “Study of the electron anomalous transport in a Hall effect thruster using a 2D multi-fluid simulation”, IEPC-2019-716, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019 (poster).
- R. Sahu, C. Gonzalez, and K. Hara, “Development of 1D Magnetostatic Two-Fluid Plasma Simulation of a Hall Effect Thruster”, IEPC-2019-726, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019.
- C. M. Greve, K. Hara, and R. Martin, “Data-Driven Modeling for Nonlinear Dynamics of Physical Phenomena in Hall Effect Thrusters”, IEPC-2019-732, the 36th International Electric Propulsion Conference, Vienna, Austria, September 2019.
- C. Limbach and K. Hara, “A Combined Particle and Laser Beam Propulsion Concept Based on OptoMechanical Coupling ”, AIAA-2019-3800, AIAA Propulsion and Energy Forum and Exposition, Indianapolis, IN, August 2019.
- D. Kuldinow, K. Hara, D. Morales, and C. Limbach, “Numerical Simulation of Laser and Particle Coupled Beam Propagation”, AIAA 2019-3803, AIAA Propulsion and Energy Forum and Exposition, Indianapolis, IN, August 2019.
- K. Hara, M. Majji, and C. Greve, “Unknown Input and State Estimation in Plasma Dynamical Systems for Data-Driven Modeling Applications”, AIAA-2019-3994, AIAA Propulsion and Energy Forum and Exposition, Indianapolis, IN, August 2019.
- K. Hara, “High-energy ion generation due to the plasma wave driven by current-carrying instabilities”, AIAA-2019-4249, AIAA Propulsion and Energy Forum and Exposition, Indianapolis, IN, August 2019.
- K. Hara, “Vlasov-Poisson simulation of current-carrying ion acoustic instability: nonlinear saturation and ion kinetics”, 2019 IEEE Pulsed Power and Plasma Science Conference, Paper # 1249, Orlando, FL, June 2019.
- A. R, Mansour and K. Hara, “Multispecies Nonequilibrium Plasma Fluid Simulation of an Ablating Arc Discharge in Atmospheric Pressure”, 2019 IEEE Pulsed Power and Plasma Science Conference, Paper # 1250, Orlando, FL, June 2019.
- K. Hara, “Overview and challenges of partially magnetized plasma modeling”, 2019 IEEE Pulsed Power and Plasma Science Conference, Paper # 1251, Orlando, FL, June 2019.
- C. Treece and K. Hara, “Ion kinetics and nonlinear saturation of current-carrying instabilities”, 71st Annual Gaseous Electronics Conference, Portland OR, November 2018 (poster).
- J.-P. Boeuf, A. Smolyakov, G. Hagelaar, and K. Hara, “Benchmark test cases for low temperature magnetized plasma modeling”, 71st Annual Gaseous Electronics Conference, Portland OR, November 2018 (poster).
- K. Hara and I. G. Mikellides, "Characterization of low frequency ionization oscillations in Hall thrusters using a one-dimensional fluid model”, AIAA/SAE/ASEE Joint Propulsion Conference, Cincinnati, OH, July 2018.
- A. L. Raisanen, K. Hara, and I. D. Boyd, "Two-dimensional Hybrid-Direct Kinetic Simulation of a Hall Thruster”, AIAA/SAE/ASEE Joint Propulsion Conference, Cincinnati, OH, July 2018.
- K. Hara and R. Kawashima, "Low-frequency ionization oscillations due to azimuthally rotating spokes in cross-field configurations”, QR1.00003, 70th Annual Gaseous Electronics Conference, Pittsburgh, PA, November 2017.
- A. Khrabry, A. Khodak, K. Hara, V. Nemchinsky, and I. D. Kaganovich, "Self-consistent numerical simulation of carbon transport in the arc discharge for carbon nanotube synthesis”, VF1.00004, 70th Annual Gaseous Electronics Conference, Pittsburgh, PA, November 2017.
- K. Hara, I. Barth, E. Kaminski, I. Dodin, and N. Fisch, "Grid-based kinetic simulations of ladder climbing by electron plasma waves”, NW1.00058, 70th Annual Gaseous Electronics Conference, Pittsburgh, PA, November 2017. (poster)
- K. Hara and S. Cho, "Background pressure effects on Hall thruster discharge plasma using a full particle simulation”, GT1.00071, 70th Annual Gaseous Electronics Conference, Pittsburgh, PA, November 2017. (poster)
- E. T. Dale, B. Jorns, and K. Hara, "Numerical investigation of the stability criteria for the breathing mode in Hall Effect Thrusters”, IEPC-2017-265, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- J. W. Koo, J. Tran, R. S. Martin, and K. Hara, "Role of Ion Dynamics in Anomalous Electron Transport”, IEPC-2017-009, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- R. Kawashima, J. Bak, K. Hara, K. Komurasaki, and H. Koizumi, "Effects of Azimuthal Non-uniformity on the Hall Thruster Discharge”, IEPC-2017-527, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- A. Kawasaki and K. Hara, "Development of 1D, time-dependent, multi-fluid model for Hall thruster discharge plasma”, IEPC-2017-508, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- K. Hara and K. Kubota, "Direct kinetic simulation of ion acoustic turbulence in cathode plume”, IEPC-2017-496, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- K. Hara and S. Cho, "Radial-azimuthal particle-in-cell simulation of a Hall effect thruster”, IEPC-2017-495, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- I. Romadanov, A. Smolyakov, A. Diallo, Y. Raitses, and K. Hara, "Time-resolved measurements of modulated breathing oscillations in Hall Thruster”, IEPC-2017-267, 35th International Electric Propulsion Conference, Atlanta, GA, October 2017.
- H. C., Dragnea, K. Hara, and I. D. Boyd, "Develop Model in Hall Thrusters", AIAA Propulsion and Energy Forum and Exposition, AIAA Paper 2017-4632, July 2017.
- A. Raisanen, K. Hara and I. D. Boyd, "Assessment of a Two-Dimensional Hybrid-Direct Kinetic Simulation of a Hall Thruster”, AIAA Propulsion and Energy Forum and Exposition, AIAA Paper 2017-4727, Atlanta, GA, July 2017.
- S. E. Anderson, K. Hara, and S. S. Girimaji, "Advanced Magneto-gas-kinetic scheme for MHD: Analysis and comparison to existing models", IEEE International Conference on Plasma Science., Atlantic City, NJ, May 2017.
- R. Kawashima and K. Hara, "Numerical modeling of rotating spokes in Hall thruster discharge plasma", IEEE International Conference on Plasma Science, Paper #1566, Atlantic City, NJ, May 2017.
- K. Hara and I. D. Kaganovich, "Electron acceleration due to the interaction between a neutralized ion beam and background plasma", IEEE International Conference on Plasma Science, Paper #1539, Atlantic City, NJ, May 2017.
- K. Hara, I. Barth, E. Kaminski, I. Dodin, and N. Fisch, "Vlasov simulations of ladder climbing and autoresonant acceleration of Langmuir waves”, 58th Annual Meeting of the APS Division of Plasma Physics, San Jose, CA, October 2016. (poster)
- K. Hara, I. D. Kaganovich and Y. Raitses, "Fluid simulation of carbon arc plasma”, 69th Annual Gaseous Electronics Conference, Bochum, Germany, October 2016.
- K. Hara, S. Keller, and Y. Raitses, "Measurements and theory of driven breathing oscillations in a Hall effect thruster", AIAA Propulsion and Energy Forum and Exposition 2016, AIAA-2016-4532, Salt Lake City, UT, July 2016.
- K. Hara and S. Cho, "Development of a hybrid particle-continuum kinetic method for Hall thruster discharge plasmas", AIAA Propulsion and Energy Forum and Exposition 2016, AIAA-2016-4621, Salt Lake City, UT, July 2016.
- A. Raisanen, K. Hara, and I. D. Boyd, "Comparing Two-Dimensional, Axisymmetric, Hybrid-Direct Kinetic and Hybrid-Particle-in-Cell Simulations of the Discharge Plasma in a Hall Thruster", AIAA Propulsion and Energy Forum and Exposition 2016, AIAA-2016-4620, Salt Lake City, UT, July 2016.
- R. Kawashima, K. Hara, K. Komurasaki, and H. Koizumi, "A Unified Model for Axial-Radial and Axial-Azimuthal Hall Thruster Simulations", AIAA Propulsion and Energy Forum and Exposition 2016, AIAA-2016-4726, Salt Lake City, UT, July 2016.
- K. M. Hanquist, K. Hara, and I. D. Boyd, "Modeling of Electron Transpiration Cooling for Hypersonic Vehicles", 46th AIAA Thermophysics Conference, AIAA Paper 2016-4433, June 2016.
- K. Hara and I. D. Kagaonovich, "Electron Acceleration due to Ion Beam Driven Instability", 57th Annual Meeting of APS Division of Plasma Physics, Savannah, GA, November 2015. (Poster)
- H. Dragnea, K. Hara and I. D. Boyd, "A 9-Point Finite Volume Potential Solver", 68th Annual Gaseous Electronics Conference, Honolulu, HI, October 2015.
- K. Hara and I. D. Boyd, "Axial-azimuthal hybrid-direct kinetic simulation of Hall effect thrusters", IEPC-2015-286, 34th International Electric Propulsion Conference, Kobe, Japan, July 2015.
- K. Hara, M. J. Sekerak, A. D. Gallimore, and I. D. Boyd, "Breathing mode in Hall effect thrusters", IEPC-2015-283, 34th International Electric Propulsion Conference, Kobe, Japan, July 2015.
- K. Hara, T. Chapman, J. W. Banks, S. Brunner, I. Joseph, R. L. Berger, and I. D. Boyd, "Vlasov simulations of negative mass instability of Langmuir waves", 56th Annual Meeting of APS Division of Plasma Physics, New Orleans, LA, November 2014. (Poster) (Student travel grant)
- K. Hara, I. D. Boyd, M. J. Sekerak, and A. D. Gallimore, "Discharge oscillation mode transition of a Hall thruster", 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams, Washington DC, May 2014. (Awarded)
- K. Hara and I. D. Boyd, "Front tracking scheme for direct kinetic simulations", 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams, Washington DC, May 2014.
- K. Hara, I. D. Boyd, and I. D. Kaganovich, "A direct Vlasov simulation of nonlinear plasma waves", 55th Annual Meeting of APS Division of Plasma Physics, Denver, CO, November, 2013. (Poster)
- K. Hara and I. D. Boyd, "Low Frequency Oscillation Analysis of a Hall Thruster Using a One-Dimensional Hybrid-Direct Kinetic Simulation", IEPC Paper 2013-266, 33rd International Electric Propulsion Conference, Washington DC, October, 2013.
- K. Hara and I. D. Boyd, "Analysis of Secondary Electron Emission of Dielectric Materials Using a Direct Kinetic Simulation", IEEE Pulsed Power and Plasma Science Conference (40th IEEE International Conference on Plasma Science) , San Francisco, CA, June, 2013.
- K. Hara, I. D. Boyd, and V. I. Kolobov, "Investigation of Presheath and Sheath Using a Full-Vlasov Simulation", 65th Annual Gaseous Electronics Conference, Austin, TX, October, 2012.
- K. Hara, I. D. Boyd, and V. I. Kolobov, "One-dimensional hybrid-Vlasov simulation of Hall thrusters", 48th AIAA Joint Propulsion Conference, Atlanta, GA, AIAA-2012-4313, August, 2012.
- S. Varadan, K. Hara, B. Van Leer, and E. Johnsen, "Development of Discontinuous Galerkin Method for Supersonic flows", 1st High-Order CFD Workshop, 50th AIAA Aerospace Sciences Meeting, Nashville, TN, January, 2012.
- K. Hara, S. Yokota, S. Cho, D. Takahashi, K. Komurasaki, and Y. Arakawa, "Boundary Conditions in a Hall thruster Ion Trajectory Simulation"(in Japanese), 41th Annual Meeting of Japan Society for Aeronautical and Space Sciences, Tokyo, Japan, April, 2010. (Awarded)
- Y. Fukushima, S. Yokota, D. Takahashi, K. Hara, S. Cho, K. Komurasaki, and Y. Arakawa, "Discharge Stabilization Method of an Anode Layer Type Hall Thruster by Non-uniform Propellant Flow", IEPC-2009-148, the 31st International Electric Propulsion Conference, Ann Arbor, MI, September, 2009.
- S. Yokota, K. Hara, S. Cho, D. Takahashi, K. Komurasaki, and Y. Arakawa, "Measurement of Ion Number Density and Velocity Distribution in an Anode-layer Type Hall Thruster by Laser Induced Florescence Method", IEPC-2009-149, the 31st International Electric Propulsion Conference, Ann Arbor, MI, September, 2009.