TOMOYUKI JOZAKI

Last Updated :2021/05/31

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
Web Site
E-mail
tjohzakihiroshima-u.ac.jp
Self-introduction
My research major is numerical study for laser plasma such as laser fusion, laser acceleration, laser plasma light source.

Basic Information

Academic Degrees

  • Doctor of Engineering, Kyushu University
  • Master of Engineering, Kyushu University

Educational Activity

  • 【Bachelor Degree Program】School of Engineering : Cluster 1(Mechanical Systems, Transportation, Material and Energy)
  • 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Mechanical Engineering Program
  • 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Mechanical Engineering Program

Research Fields

  • Mathematical and physical sciences;Plasma science;Plasma science
  • Engineering;Integrated engineering;Nuclear fusion studies
  • Interdisciplinary science and engineering;Computational science;Computational science

Research Keywords

  • Laser Plasma Physics
  • Numerical Simulation
  • Laser Fusion
  • High Energy Density Physics

Affiliated Academic Societies

  • The Physical Society of Japan
  • American Physical Society
  • The Japan Society of Plasma Science and Nuclear Fusion Research

Educational Activity

Course in Charge

  1. 2021, Liberal Arts Education Program1, 4Term, Industry and Technology
  2. 2021, Undergraduate Education, 2Term, Computer Programming
  3. 2021, Undergraduate Education, 3Term, Elementary Electromagnetism
  4. 2021, Undergraduate Education, 3Term, Computational Fluid Dynamics
  5. 2021, Undergraduate Education, 2Term, Reliability Engineering
  6. 2021, Undergraduate Education, Second Semester, Mechanical Engineering Seminar
  7. 2021, Graduate Education (Master's Program) , 3Term, Special Exercises on Mechanical Engineering B
  8. 2021, Graduate Education (Master's Program) , 1Term, Special Exercises on Mechanical Engineering A
  9. 2021, Graduate Education (Master's Program) , 2Term, Special Exercises on Mechanical Engineering A
  10. 2021, Graduate Education (Master's Program) , 4Term, Special Exercises on Mechanical Engineering B
  11. 2021, Graduate Education (Master's Program) , Academic Year, Special Study on Mechanical Engineering
  12. 2021, Graduate Education (Master's Program) , 3Term, Advanced Reactive Gas Dynamics
  13. 2021, Graduate Education (Doctoral Program) , Academic Year, Special Study on Mechanical Engineering

Research Activities

Academic Papers

  1. X-ray backlight measurement of preformed plasma by kJ-class petawatt LFEX laser, JOURNAL OF APPLIED PHYSICS, 112(6), 20120915
  2. Computational study of strong magnetic field generation in a nonspherical, cone-guided implosion, NUCLEAR FUSION, 53(6), 201306
  3. High-energy-density plasmas generation on GEKKO-LFEX laser facility for fast-ignition laser fusion studies and laboratory astrophysics, PLASMA PHYSICS AND CONTROLLED FUSION, 54(12), 201212
  4. Kilotesla Magnetic Field due to a Capacitor-Coil Target Driven by High Power Laser, SCIENTIFIC REPORTS, 3, 20130130
  5. Analysis of Laser Wavelength and Energy Dependences of the Impulse in a Magnetic Thrust Chamber System for a Laser Fusion Rocket, TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 56(3), 170-172, 201305
  6. Quantitative measurement of hard X-ray spectra from laser-driven fast ignition plasma, HIGH ENERGY DENSITY PHYSICS, 9(3), 435-438, 201309
  7. Effects of laser profiles on fast electron generation under the same laser energy, LASER AND PARTICLE BEAMS, 31(3), 371-377, 201309
  8. Present status of fast ignition realization experiment and inertial fusion energy development, NUCLEAR FUSION, 53(10), 201310
  9. Design of a cone target for fast ignition, EPJ Web of Conferences, 59, 03009, 2013
  10. Effects of laser temporal profile on fast electron characteristics, EPJ Web of Conferences 59, 17004, 2013
  11. Efficient multi-keV X-ray generation from high-contrast laser plasma interaction, EPJ Web of Conferences 59, 18003, 2013
  12. Efficient multi-keV X-ray generation from high-contrast laser plasma interaction, EPJ Web of Conferences 59, 01008, 2013
  13. Fast electron beam guiding for effective core heating, EPJ Web of Conferences 59, 03010 , 2013
  14. Suppression effects of Weibel instability for fast electron divergences, EPJ Web of Conferences 59, 17016, 2013
  15. Enhancement of Energy Coupling Efficiency in Fast-Ignition Laser Fusion by Electron Beam Guiding with Self-Generated Magnetic Field, J. Plasma Fusion Res., 89(7), 456-461, 201307
  16. Hot electron spectra in hole-cone shell targets and a new proposal of the target for fast ignition in laser fusion, Physica Scripta, 2014, 201405
  17. Theory of fast electron transport for fast ignition, Nucl. Fusion, 54, 054003, 201405
  18. Laser-plasma interactions for fast ignition, NUCLEAR FUSION, 54(5), 201405
  19. Impact ignition as a track to laser fusion, NUCLEAR FUSION, 54(5), 201405
  20. Advanced Simulation Techniques of Particle-in-Cell Code for High Density Relativistic Plasma 1. Introduction, J. Plasma Fusion Res., 90(5), 296-298, 201405
  21. Advanced Simulation Techniques of Particle-in-Cell Code for High Density Relativistic Plasma 6. Radiation Transport and Nuclear Reaction Models for Particle Simulations, J. Plasma Fusion Res., 90(8), 500-504, 201408
  22. Kinetic effects and nonlinear heating in intense x-ray-laser-produced carbon plasmas, PHYSICAL REVIEW E, 90(5), 201411
  23. ★, Control of an electron beam using strong magnetic field for efficient core heating in fast ignition, NUCLEAR FUSION, 55(5), 201505
  24. Heating efficiency evaluation with mimicking plasma conditions of integrated fast-ignition experiment, PHYSICAL REVIEW E, 91(6), 20150605
  25. Computational study of magnetic field compression by laser-driven implosion, NUCLEAR FUSION, 55(9), 201509
  26. Fast ignition realization experiment with high-contrast kilo-joule peta-watt LFEX laser and strong external magnetic field, PHYSICS OF PLASMAS, 23(5), 20160503
  27. Ultrahigh-contrast kilojoule-class petawatt LFEX laser using a plasma mirror, APPLIED OPTICS, 55(25), 6850-6857, 20160823
  28. ★, Integrated simulation of magnetic-field-assist fast ignition laser fusion, PLASMA PHYSICS AND CONTROLLED FUSION, 59(1), 014045, 20161116
  29. Boosting laser-ion acceleration with multi-picosecond pulses, SCIENTIFIC REPORTS, 7, 42451, 20170213
  30. Validation of thermal conductivity in magnetized plasmas using particle-in-cell simulations, PHYSICS OF PLASMAS, 24(4), 042117, 20170418
  31. Improvement in the heating efficiency of fast ignition inertial confinement fusion through suppression of the preformed plasma, NUCLEAR FUSION, 57(6), 066022, 20170425
  32. Kinetic modeling of x-ray laser-driven solid Al plasmas via particle-in-cell simulation, PHYSICAL REVIEW E, 95(6), 063203, 20170606
  33. Compression and electron beam heating of solid target under the external magnetic field for fast ignition, NUCLEAR FUSION, 57(8), 086009, 20170614
  34. Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle, SCIENTIFIC REPORTS, 7, 8910, 20170822
  35. The Measurement of Plasma Structure in a Magnetic Thrust Chamber, PLASMA AND FUSION RESEARCH, 11, 2016
  36. Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket, JAPANESE JOURNAL OF APPLIED PHYSICS, 57(5), 050303, 20180519
  37. Thomson Scattering Measurement of Laser-Produced Plasma in a Magnetic Thrust Chamber, PLASMA AND FUSION RESEARCH, 13, 1306016, 20180323
  38. ★, Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states, NATURE COMMUNICATIONS, 9(1), 3937-1-3937-9, 20180926
  39. Experiments on laser cleaning of sooted optical windows, APPLIED OPTICS, 57(36), 10522-10527, 20181220
  40. Enhanced heat transport in ablation plasma under transverse magnetic field by upper hybrid resonance heating, HIGH ENERGY DENSITY PHYSICS, 30, 8-12, 201901
  41. Enhancement of water-window soft x-ray emission from laser-produced Au plasma under low-pressure nitrogen atmosphere, OPTICS LETTERS, 44(6), 1439-1442, 20190315
  42. Minimum ignition energy and minimum explosible concentration of L-isoleucine and glycine powder, POWDER TECHNOLOGY, 347, 207-214, 20190401
  43. Experimental study on the onset of flame acceleration due to cellular instabilities, JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 60, 264-268, 201907
  44. Electromagnetic field growth triggering super-ponderomotive electron acceleration during multi-picosecond laser-plasma interaction, COMMUNICATIONS PHYSICS, 2, 99, 20190827
  45. Thomson scattering measurement of laser-produced plasma in a magnetic thrust chamber
  46. Study of fast ignition target design for ignition and burning experiments, NUCLEAR FUSION, 59(10), 106055-1-106055-8, 20190913
  47. ★, Petapascal Pressure Driven by Fast Isochoric Heating with a Multipicosecond Intense Laser Pulse, PHYSICAL REVIEW LETTERS, 124(3), 20200124
  48. Simple Analysis of the Laser-to-Core Energy Coupling Efficiency with Magnetized Fast Isochoric Laser Heating, PLASMA AND FUSION RESEARCH, 14(3404138), 20190925
  49. Deflagration-to-detonation transition in laser-ignited explosive gas contained in a smooth-wall tube, COMBUSTION AND FLAME, 219, 275-282, 202009
  50. Enhanced relativistic electron beams intensity with self-generated resistive magnetic field, HIGH ENERGY DENSITY PHYSICS, 36, 202008
  51. Monte Carlo particle collision model for qualitative analysis of neutron energy spectra from anisotropic inertial confinement fusion, HIGH ENERGY DENSITY PHYSICS, 36, 202008
  52. Intensification of laser-produced relativistic electron beam using converging magnetic fields for ignition in fast ignition laser fusion, HIGH ENERGY DENSITY PHYSICS, 36, 202008
  53. Detonation propagation from a cylindrical tube into a diverging cone, JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, 15(3), 2020
  54. Numerical analysis on a conical shaped target for laser fusion rocket, HIGH ENERGY DENSITY PHYSICS, 37, 202011
  55. Observation of water-window soft x-ray emission from laser-produced Au plasma under optically thin condition, HIGH ENERGY DENSITY PHYSICS, 37, 202011
  56. Verification of fast heating of core plasmas produced by counter-illumination of implosion lasers, HIGH ENERGY DENSITY PHYSICS, 37, 202011

Invited Lecture, Oral Presentation, Poster Presentation

  1. Recent Topics on ICF Theory & Simulation, T. Johzaki, Workshop on Status and Prospects of High Energy Density Science by Giant Laser, 2014/06/03, With Invitation, Japanese, Gakushi Kaikan, Tokyo, Japan
  2. Numerical Modeling of Radiative Kinetic Plasmas, T. Johzaki, T. Johzaki, Y. Sentoku, R. Mancini, R. Rolye, I. Paraschiv, Plasma SImulation symposium 2014, 2014/09/11, With Invitation, English, NIFS, NIFS, Toki, Gifu, Japan
  3. Electron beam generation and transport in kT-class longitudinal magnetic fields, T. Johzaki, T. Johzaki, Y. Sentoku, H. Nagatomo, A. Sunahara, H. Sakagami, K. Mima, S. Fujioka, H. Shiraga and FIREX project group, 13th International Workshop on the Fast Ignition of Fusion Targets, 2014/09/18, Without Invitation, English, Co-chairs Peter Norreys, University of Oxford, UK - European Co-chair Prav Patel, Lawerence Livermore National Laboratory, US - US Co-chair Hiroyuki Shiraga, Osaka University, Japan - Asia Pacific Co-chair, Queen's College, Oxford, UK
  4. Fast Ignition by Photon-Pressure Accelerated Ion Beam, T. Johzaki, T. Johzaki, Y. Sentoku, A. Sunahara, T. Morikawa, T. Endo, 56th Annual Meeting of the APS Division of Plasma Physics, 2014/10/29, Without Invitation, English, American Physical Society, New Orleans Marriott, New Orleans, LA, USA
  5. Numerical Modeling of Radiative Kinetic Plasmas, T. Johzaki, T. Johzaki, Y. Sentoku, R. Mancini, R.C. Rolye, I. Paraschiv, S. Sunahara, 2014 US-Japan JIFT Workshop on Progress in kinetic plasma simulations, 2014/10/31, Without Invitation, English, Organizers: Alexey Arefiev Institute for Fusion Studies, The University of Texas at Austin, USA Hiroaki Ohtani National Institute for Fusion Science, Japan, New Orleans Marriott, New Orleans, LA, USA
  6. Electron beam generation and transport in kT-class longitudinal magnetic fields, T. Johzaki, S. Fujioka, Y. Arikawa, A. MoraceH. Nagatomo, H. Shiraga, H. Azechi, A. Sunahara, Y. Sentoku, H. Sakagami, K. Mima, T. Taguchi, J. Honrubia, J. J. Santos, 2014 US-Japan JIFT Workshop on fast ignition and relevant high energy-density physics, 2014/11/03, Without Invitation, English, Organizers: Alex Arefiev (IFS, US), Atsushi Sunahara (ILT, Japan), Juan Fernandez (LANL, US), Farhat Beg (UCSD, US)., University of Texas at Austin, Austin., TX, USA
  7. kT-class Magnetic Fields in Laser Fusion Research, T. Johzaki, Plasma Conference 2014, 2014/11/19, With Invitation, English, The Physical Society of Japan, The Japan Society of Plasma Science and Nuclear Fusion Research, The Japan Society of Applied Physics, Toki Messe, Niigata, Japan
  8. 光圧加速イオンビームによる高速点火, T. Johzaki, Y. Sentoku, A. Sunahara, T. Morikawa, T. Endo, Plasma Conference 2014, 2014/11/20, Without Invitation, Japanese, The Physical Society of Japan, The Japan Society of Plasma Science and Nuclear Fusion Research, The Japan Society of Applied Physics, Toki Messe, Niigata, Japan
  9. レーザー加速イオンビームによるコア加熱効率の向上, T. JohzakiA, A. Sunahara, H. Nagatomo, Y. Kai, T. Endo, A. Yogo, Y. Arikawa, A. Morace, S. Kojima, S. Sakata, T. Nagai, Z. Zhang, Y. Abe, T. Ikenouchi, T. Utsugi, S.H. Lee, T. Gawa, Y. Taguchi, T. Ozaki, S. Tosaki, H. Nishimura, K. Yamanouchi, T. Norimatsu, S. Fujioka, H. Shiraga, H. Azechi, FIREX project team, JPS 70th Annual Meeting(2015), 2015/03/24, Without Invitation, Japanese, The Japan Physical Society, Waseda University, Tokyo, Japan
  10. Electron Beam Guiding by External Magnetic Fields in Imploded Fuel Plasma, T. Johzaki, T. Johzaki, Y. Sentoku, H. Nagatomo, A. Sunahara, H. Sakagami, S. Fujioka, H. Shiraga,T. Endo and FIREX project group, Ninth International Conference on Inertial Fusion Sciences and Applications, IFSA2015, 2015/09/25, With Invitation, English, 2015 IFSA Committee, Seattle, Washington, USA
  11. Relativistic Laser-Plasma Interactions under kilo-Tesla-class Magnetic Fields (1), T. Johzaki, Y. Kai, S. Takeda, T. Endo, Y. Sentoku, M. Hata, T. Taguchi, K. Mima, The physical society of Japan, 72th annual meeting, 2017/03/19, Without Invitation, Japanese, The physical society of japan, Toyonaka Campus, Osaka univeristy
  12. Integrated simulation of magnetic-field-assist fast ignition laser fusion, T. Johzaki, 43rd European Physical Society Conference on Plasma Physics, 2016/07/06, With Invitation, English, European Physical Society, Leuven, Belgium
  13. Integrated Simulation of Imploded Core Heating for the FIREX project, T. Johzaki, H. Nagatomo, Y. Sentoku, H. Sakagami, A. Sunahara, S. Fujioka, A. Yogo, H. Shiraga, H. Azechi, T. Endo and FIREX project group, 14th International workshop on fast ignition and high field physics with high power lasers, (CLES2016 in OPIC2016), 2016/05/19, With Invitation, English, Chari; Hiroshi Azechi (Osaka University, Japan), Pacifico-Yokohama, Yokohama Japan
  14. Integrated Simulation for Magnetized Fast Ignition Laser Fusion, T. Johzaki, 10th West Lake International Symposium on Magnetic Fusion and 12th Asia Pacific Plasma Theory Conference, 2016/05/12, With Invitation, English, Division of Plasma Physics Association of Asia Pacific Physical Societies, Hangzhou, China
  15. Core heating dynamics in magnetized fast ignition, Tomoyuki JOHZAKI, Hideo NAGATOMO, Yasuhiko SENTOKU, Atsushi SUNAHARA, Toshihiro TAGUCHI, Hitoshi SAKAGAMI, Shinsuke FUJIOKA, Shohei SAKATA, Seungho LEE, Hiroyuki SHIRAGA and FIREX project, 10th International Conference on Inertial Fusion Sciences and Applications, 2017/09/12, With Invitation, English, IFSA2017 Committes IFSA Co-Chairs John Edwards, LLNL (CA, USA) Ryosuke Kodama, ILE, Osaka University (Japan) Patrick Mora, ILP (France) ————————————————————- Organizing Co-Chairs Sylvie Jacquemot, LULI, ILP (France) Hiroyuki Shiraga, ILE, Osaka University (Japan) Richard Town, LLNL (CA, USA), Saint Malo, France
  16. Demonstration of Efficient Core Heating of Magnetized Fast Ignition in FIREX project, Tomoyuki JOHZAKI, 59th Annual Meeting of the APS Division of Plasma Physics, 2017/10/26, With Invitation, English, American Physical Society, Milwaukee, Wisconsin, USA
  17. Demonstration of Effective Core Heating in Magnetized Fast Ignition Laser Fusion and Prospect for Ignition, Tomoyuki JOHZAKI, Plasma Conference 2017, 2017/11/23, With Invitation, Japanese, Himeji, Hyogo, Japan
  18. Integrated Simulation on RPA C6+ beam driven Fast Ignition Laser Fusion, Tomoyuki JOHZAKI, Y. Kai, K. Tsuchikawa, S. Hieda, W. Kim, T. Endo, Y. Sentoku and A. Sunahara, 73rd Annual meeting of the Physical society of Japan, 2018/03/24, Without Invitation, Japanese, The Physical Society of Japan, Noda, Chiba, Japan
  19. Relaxation of ignition condition by magnetic guiding of relativistic electron beam I, Tomoyuki Johzaki, S. Takeda, M. Horio, W. Kimu, T. Endo, A. Sunahara, The Physical Society of Japan, 2018 Autumn Meeting, 2018/09/11, Without Invitation, Japanese, The Physical Society of Japan, Kyotanabe Campus, Doshisha Univ.
  20. Magnetic field guiding of electron beam for reduction of ignition requirement in fast ignition laser fusion, Tomoyuki Johzaki, M. Horio, S. Takeda, W. Kim, T. Endo, H. Nagatomo, Y. Sentoku, A. Sunahara, 60th Annual Meeting of the American Physical Society Division of Plasma Physics, 2018/11/05, Without Invitation, English, American Physical Society, Portland, OR, USA

Awards

  1. 2017/11/21, 22nd JSPF Award for Notable Contribution to Technology, The Japan Society of Plasma Science and Nuclear Fusion Research
  2. 2018/08/17, 12th International Symposium on Hazards, Prevention, and Mitigation of Industrial Explosions Best Paper Award, ISHPMIE Awards Committee Chair

Social Activities

Other Social Contributions

  1. JSPS 57th Plasma summer school for young scientists, First step of laser fusion ~ ni, The Japan Society of Plasma Science and Nuclear Fusion Research (JSPS), 2018/08/29, 2018/08/31, Lecturer, Seminar or workshop, Graduate students