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  1. Y. Yamashita, K. Hara, and S. Sriraman, "Hysteresis between gas breakdown and plasma discharge", Physics of Plasmas (Special Issue: Plasma Sources for Advanced Semiconductor Applications) 31, 073510 (2024) [editor's pick]
  2. D. A. Kuldinow, Y. Yamashita, A. R. Mansour, and K. Hara, "Ten-Moment Fluid Model with Heat Flux Closure for Gasdynamic Flows", Journal of Computational Physics 508, 113030 (2024)
  3. S. Hussain, D. J. Lary, K. Hara, K. Bera, S. Rauf, and M. Goeckner, "A Case Study in Machine Learning for Predicting Moderate Pressure Plasma Behavior", Journal of Vacuum Science and Technology A 42, 043001 (2024)
  4. A. M. Castillo and K. Hara, "Loss cone effects and monotonic sheath conditions of a partially magnetized plasma sheath", Physics of Plasmas 31, 030701 (2024)
  5. R. W. H. Chan, K. Hara, and I. D. Boyd, "Effects of multi-dimensionality and energy exchange on electrostatic current-driven plasma instabilities and turbulence", Journal of Plasma Physics 90, 905900206 (2024)
  6. D. E. Troyetsky, C. M. Greve, S. Tsikata, and K. Hara, "State estimation of the dynamic behavior of plasma properties in a Hall effect thruster discharge", Journal of Physics D: Applied Physics (Special Issue on Data Driven Plasma Science) 56 444001 (2023)
  7. Y. Yamashita, R. Lau, and K. Hara, "Inertial and anisotropic pressure effects on cross-field electron transport in low-temperature magnetized plasmas", Journal of Physics D: Applied Physics (Special Issue: Emerging Leaders) 56, 384003 (2023)
  8. Z. Liu, K. Hara, and M. Shneider, "Dynamics of electrified liquid metal surface using shallow water model", Physics of Fluids 35, 042101 (2023) [featured article]
  9. A. C. Denig and K. Hara, "Three-Dimensional Coupling of Electron Cyclotron Drift Instability and Ion-Ion Two Stream Instability", Physics of Plasmas 30, 032108 (2023)
  10. K. Hara, T. M. Robertson, J. Kenney, and S. Rauf, "Effects of macroparticle weighting in axisymmetric particle-in-cell Monte Carlo collision simulations", Plasma Sources Science and Technology 32, 015008 (2023)
  11. S. T. Sewell, P. Kumar, and K. Hara, "Effects of the wavelength of the plasma waves on cross-field electron transport in partially magnetized plasmas", IEEE Transactions on Plasma Science 50, 3498-3506 (2022)
  12. K. Hara, A. R. Mansour, and S. Tsikata, “Theory of gradient drift instabilities in low-temperature, partially magnetized plasmas”, Journal of Plasma Physics 88, 905880408 (2022)
  13. A. R. Mansour and K. Hara, “Full Fluid Moment Modeling of Rotating Spokes in Penning-type Configuration”, Plasma Sources Science and Technology 31, 055012 (2022)
  14. C. M. Greve and K. Hara, “Estimation of Plasma Properties Using an Extended Kalman Filter with Plasma Global Models”, Journal of Physics D: Applied Physics 55, 255201 (2022)
  15. A. M. Castillo, P. Kumar, C. M. Limbach, K. Hara, "Mutually Guided Light and Particle Beam Propagation", Scientific Reports 12, 4810 (2022)
  16. S. Tsikata, K. Hara, and S. Mazouffre, "Characterization of hollow cathode plasma turbulence using coherent Thomson scattering", Journal of Applied Physics 130, 243304 (2021)
  17. P. Kumar, S. Tsikata, and K. Hara, "Effects of multiply charged ions on microturbulence-driven electron transport in partially magnetized plasmas", Journal of Applied Physics 130, 173307 (2021)
  18. C. M. Greve, M. Majji, and K. Hara, “Real-time state estimation of low-frequency plasma oscillations in Hall effect thrusters”, Physics of Plasmas 28, 093509 (2021)
  19. 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 E×B Discharges”, Plasma Sources Science and Technology 30, 075002 (2021)
  20. P. Kumar, D. Kuldinow, A. M. Castillo, A. Gerakis, and K. Hara, "Nonlinear dynamics of coupled light and particle beam propagation", Physical Review A 103, 043502 (2021)
  21. A. R. Vazsonyi, K. Hara, and I. D. Boyd, "Non-monotonic double layers and electron two-stream instabilities resulting from intermittent ion acoustic wave growth", Physics of Plasmas 27 112303 (2020)
  22. R. Sahu, A. R. Mansour, and K. Hara, "Full fluid moment model for low-temperature magnetized plasmas", Physics of Plasmas 27 113505 (2020)
  23. K. Hara and S. Tsikata, "Cross-field electron diffusion due to the coupling of drift-driven microinstabilities", Physical Review E 102, 023202 (2020)
  24. I. D. Kaganovich, A. Smolyakov, Y. Raitses, E. Ahedo, I. G. Mikellides, B. Jorns, F. Taccogna, R. Gueroult, S. Tsikata, A. Bourdon, J.-P. Boeuf, M. Keidar, A. T. Powis, M. Merino, M. Cappelli, K. Hara, J. A. Carlsson, N. J. Fisch, P. Chabert, I. Schweigert, T. Laeur, K. Matyash, A. V. Khrabrov, R. W. Boswell, and A. Fruchtman, "Perspectives on Physics of E×B Discharges Relevant to Plasma Propulsion and Similar Technologies", Physics of Plasmas 27, 120601 (2020)
  25. I. M. DesJardin, K. Hara, and S. Tsikata, "Self-organized standing waves generated by AC-driven electron cyclotron drift instabilities", Applied Physical Letters 115, 234103 (2019)
  26. A. L. Raisanen, K. Hara, and I. D. Boyd, "Two-dimensional hybrid-direct kinetic simulation of a Hall thruster discharge plasma", Physics of Plasmas 26, 123515 (2019)
  27. 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 ExB discharges", Plasma Sources Science and Technology 28, 105010 (2019)
  28. C. M. Greve, K. Hara, R. S. Martin, D. Q. Eckhardt, and J. W. Koo, "A data-driven approach to model calibration for nonlinear dynamical systems", Journal of Applied Physics 125, 244901 (2019)
  29. K. Hara and C. Treece, "Ion kinetics and nonlinear saturation of current-carrying instabilities", Plasma Sources Science and Technology 28, 055013 (2019)
  30. K. Hara, "An overview of discharge plasma modeling for Hall effect thrusters", Plasma Sources Science and Technology (Special Edition for Satellite Propulsion) 28, 044001 (2019)
  31. D. Eckhardt, J. Koo, R. Martin, M. Holms; K. Hara, "Spatiotemporal data fusion and manifold reconstruction in Hall thrusters", Plasma Sources Science and Technology 28 045005 (2019)
  32. A. R. Mansour and K. Hara, "Multispecies plasma fluid modeling of carbon arc discharge", Journal Physics D: Applied Physics 52, 105204 (2019)
  33. K. Hara, "Non-oscillatory quasineutral fluid model of cross-field discharge plasmas", Physics of Plasmas 25, 123508 (2018)
  34. K. Hara and K. M. Hanquist, "Test Cases for Grid-Based Direct Kinetic Modeling of Plasma Flows", Plasma Sources Science and Technology 27, 065004 (2018)
  35. K. Hara, "Progress of Theory and Simulation on Ionization Oscillations in Hall Effect Thrusters (in Japanese)", J. Plasma Fusion Res. 94, 475-481 (2018)
  36. E. K. Tokluoglu, I. D. Kaganovich, J. A. Carlsson, K. Hara, and E. A. Startsev, "Amplication of Self-Electric and Magnetic Fields of an Ion Beam Propagating in Background Plasma due to Two-Stream Instability", Physics of Plasmas 25 , 052122 (2018)
  37. R. Kawashima, K. Hara, and K. Komurasaki, "Numerical analysis of azimuthal rotating spokes in a crossed-field discharge plasma," Plasma Sources Science and Technology 27, 035010 (2018)
  38. I. Romadanov, Y. Raitses, A. Diallo, K. Hara, I. D. Kaganovich, and A. Smolyakov, "On limitations of laser-induced fluorescence diagnostics for xenon ion velocity distribution function measurements in Hall thrusters," Physics of Plasmas 25, 033501 (2018)
  39. K. Hara, I. D. Kaganovich, and E. A. Startsev, "Generation of forerunner electron beam during interaction of ion beam pulse with plasma", Physics of Plasmas 25, 011609 (2018)
  40. K. Hara, I. Barth, E. Kaminski, I. Y. Dodin, and N. J. Fisch, "Kinetic simulations of ladder climbing' by electron plasma waves", Physical Review E 95, 053212 (2017)
  41. K. M. Hanquist, K. Hara, and I. D. Boyd, "Detailed Modeling of Electron Emission for Transpiration Cooling of Hypersonic Vehicles", Journal of Applied Physics 121, 053302 (2017)
  42. K. Hara, T. Chapman, J. W. Banks, S. Brunner, I. Joseph, R. L. Berger, and I. D. Boyd, "Quantitative study of trapped particle bunching instability in Langmuir waves", Physics of Plasmas 22, 022104 (2015)
  43. K. Hara, M. J. Sekerak, I. D. Boyd, and A. D. Gallimore, "Perturbation analysis of ionization oscillations in Hall effect thrusters", Physics of Plasmas 21, 122103 (2014)
  44. K. Hara, M. J. Sekerak, I. D. Boyd, and A. D. Gallimore, "Mode transition of a Hall thruster discharge plasma", Journal of Applied Physics 115, 203304 (2014)
  45. K. Hara, I. D. Boyd, and V. I. Kolobov, "One-dimensional hybrid-direct kinetic simulation of the discharge plasma in a Hall thruster", Physics of Plasmas 19, 113508 (2012)
  46. S. Cho, S. Yokota, K. Hara, D. Takahashi, Y. Arakawa, K. Komurasaki, and A. Kobayashi, "A Development of Lifetime Evaluation Method Using Multilayer Coating Chip", Transaction of the Japan Society for Aeronautics and Space Science, Aerospace Technology Japan, Japan Society for Aeronautics and Space Science, 8, Pb 51-Pb 54 (2010)
  47. S. Cho, S. Yokota, Y. Fukushima, K. Hara, Y. Arakawa, K. Komurasaki, and A. Kobayashi, "Application of lifetime evaluation method using multilayer coated chips", Plasma Application and Hybrid Functionally Materials, Institute of Applied Plasma Science 18, 84 (2009)
  48. M. Lempke, S. Yokota, M. Matsui, K. Hara, K. Komurasaki, and Y. Arakawa, "LIF Spectroscopy of a Hall thruster plasma plume", Plasma Application and Hybrid Functionally Materials, 17 (2008)