Optimization for Core Heating in Fast Ignition Laser Fusion

• Project/Area Number: 16K05638
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: National Institute for Fusion Science
• Principal Investigator: Sakagami Hitoshi 核融合科学研究所, ヘリカル研究部, 教授 (30254452)
• Co-Investigator(Kenkyū-buntansha): 城崎 知至 広島大学, 工学研究科, 准教授 (10397680)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: レーザー核融合 / 高速点火 / 統合シミュレーション / 高速電子ガイディング / レーザーイオン加速 / 外部磁場 / 高速電子 / イオン加速

Outline of Final Research Achievements

Detailed physics in the fast ignition laser fusion using cone-guided targets can be routinely analyzed by two-dimensional integrated simulations, in which the two-dimensional relativistic Particle-In-Cell code is collaborated with the two-dimensional heating and burning code.
Enhancements for the core heating efficiency with ion assisted heating by structured targets, fast electron guiding by an external applied magnetic field, and introduction of a chipless gold cone, etc. are quantitatively evaluated by integrated simulations, and the core heating efficiency in the 2016 FIREX experiment at Osaka University is found to be significantly improved to about 6%.

Academic Significance and Societal Importance of the Research Achievements

高速点火レーザー核融合における物理を総合的に理解するためには，空間・時間スケールが大きく異なる絡み合った極限状態にある複数の複雑現象を同時に取り扱う必要があるため，複数のシミュレーションコードを有機的に連携し，全体を統合シミュレーションする学術的にユニークなシステムを開発した．
そして，統合シミュレーションによりFIREX実験を解析し，実験結果を定量的に評価することに貢献した．
このシステムは，高エネルギー密度科学の物理解明にも貢献しており，今後のレーザー宇宙物理学への展開も期待できる．

Research Products

• [Int'l Joint Research] Purdue University(米国)
• [Journal Article] Petapascal Pressure Driven by Fast Isochoric Heating with a Multipicosecond Intense Laser Pulse (2020)
  • Author(s): Matsuo Kazuki、Higashi Naoki、Iwata Natsumi、Sentoku Yasuhiko、Fujioka Shinsuke
  • Journal Title: Physical Review Letters Volume: 124 Issue: 3 Pages: 035001-035001
  • DOI: 10.1103/physrevlett.124.035001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effect of small Focus on Electron Heating and Proton Acceleration in Ultrarelativistic Laser-Solid Interactions (2020)
  • Author(s): N.P. Dover, M. Nishiuchi, H. Sakaki, M. Alkhimova, A. FaenovA,M.Hata , M. Hata, N. Iwata, H. Kiriyama, J.K. Koga, T. Miyahara, T.Pikuz, A. Pirozhkov, A. Sagisaka, Y. Sentoku, Y. Watanabe, M. Kando, K. Kondo
  • Journal Title: Phys. Rev. Lett. Volume: 124 Issue: 8 Pages: 084802-084802
  • DOI: 10.1103/physrevlett.124.084802
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spherical shell pellet injection system for repetitive laser engagement (2019)
  • Author(s): Y. Mori, A. Iwamoto, K. Ishii, R. Hanayama, S. Okihara, Y. Kitagawa, Y. Nishimura, O. Komeda, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, H. Sakagami, and E. Miura
  • Journal Title: Nuclear Fusion Volume: 59 Issue: 9 Pages: 096022-096022
  • DOI: 10.1088/1741-4326/ab22d1
  • Peer Reviewed
• [Journal Article] Electromagnetic field growth triggering super-ponderomotive electron acceleration during multi-picosecond laser-plasma interaction (2019)
  • Author(s): Kojima Sadaoki、Hata Masayasu、Iwata Natsumi、Sentoku Yasuhiko、Fujioka Shinsuke
  • Journal Title: Communications Physics Volume: 2 Issue: 1 Pages: 99-99
  • DOI: 10.1038/s42005-019-0197-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Study of fast ignition target design for ignition and burning experiments (2019)
  • Author(s): H. Nagatomo, T. Johzaki, T. Asahina, M. Hata, Y. Sentoku, K. Mima, H. Sakagami
  • Journal Title: Nuclear Fusion Volume: 59 Issue: 10 Pages: 106055-106055
  • DOI: 10.1088/1741-4326/ab3a5d
  • Peer Reviewed
• [Journal Article] Experiments of forward THz emission from femtosecond laser created plasma with applied transverse electric field in air (2019)
  • Author(s): T. Fukuda, T. P. Otsuka, Y. Sentoku, H. Nagatomo, H. Sakagami, R. Kodama, and N. Yugami
  • Journal Title: Japanese Journal of Applied Physics Volume: 59 Pages: 020902-020902
  • Peer Reviewed
• [Journal Article] ピコ秒レーザー照射におけるプラズマ構造変化に伴う超熱的電子加速 (2019)
  • Author(s): 畑昌育
  • Journal Title: プラズマ・核融合学会誌, Volume: 95 Pages: 317-321
• [Journal Article] Ablation suppression of a titanium surface interacting with a two-color double-pulse femtosecond laser beam (2019)
  • Author(s): Takenaka Keisuke、Tsukamoto Masahiro、Hashida Masaki、Masuno Shinichiro、Sakagami Hitoshi、Kusaba Mitsuhiro、Sakabe Shuji、Inoue Shunsuke、Furukawa Yuki、Asai Satoru
  • Journal Title: Applied Surface Science Volume: 478 Pages: 882-886
  • DOI: 10.1016/j.apsusc.2019.02.051
  • Peer Reviewed
• [Journal Article] Enhanced heat transport in ablation plasma under transverse magnetic field by upper hybrid resonance heating (2019)
  • Author(s): Asahina Takashi、Nagatomo Hideo、Sunahara Atsushi、Johzaki Tomoyuki、Hata Masayasu、Mima Kunioki、Sentoku Yasuhiko
  • Journal Title: High Energy Density Physics Volume: 30 Pages: 8-12
  • DOI: 10.1016/j.hedp.2018.12.003
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Super-ponderomotive electron acceleration in blowout plasma heated by multi-picosecond relativistic intensity laser pulse (2018)
  • Author(s): S. Kojima, M. Hata, N. Iwata, Y. Arikawa, A. Morace, S. Sakata, S. Lee, K. Matsuo, K.F. F. Law, H. Morita, Y. Ochiai, A. Yogo, H. Nagatomo, T. Ozaki, T. Johzaki, A. Sunahara, H. Sakagami, Z. Zhang, S. Tosaki, Y. Abe, J. Kawanaka, S. Tokita, M. Nakai, H. Nishimura, H. Shiraga, H. Azechi, Y. Sentoku, and S. Fujioka
  • Journal Title: arXiv: 1803.02514 v1 [physics. plasm-ph] Volume: 1803 Pages: 02514-02514
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Magnetized fast isochoric laser heating for efficient creation of ultra-high-energy-density states (2018)
  • Author(s): S. Sakata, K. Matsuo, S. Kojima, S. Lee, H. Morita, T. Johzaki, H. Sawada, K. F. F. Law, A. Yao, M. Hata, A. Sunahara, Y. Abe, H. Kishimoto, A. Syuhada, T. Shiroto, Y. Iwasa, A. Morace, A. Yogo, N. Iwata, M. Nakai, H. Sakagami, et al.
  • Journal Title: Nature Communications Volume: 9 Issue: 1 Pages: 3937-3937
  • DOI: 10.1038/s41467-018-06173-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 1-Hz Bead-Pellet Injection System for Fusion Reaction Engaged by a Laser HAMA Using Ultra-Intense Counter Beams (2018)
  • Author(s): Y. Mori, Y. Nishimura, K. Ishii, R. Hanayama, Y. Kitagawa, T. Sekine, Y. Takeuchi, N. Satoh, T. Kurita, Y. Kato, N. Kurita, T. Kawashima, O. Komeda, T. Hioki, T. Motohiro, A. Sunahara, Y. Sentoku, E. Miura, A. Iwamoto, and H. Sakagami
  • Journal Title: Fusion Science and Technology Volume: 75 Issue: 1 Pages: 36-48
  • DOI: 10.1080/15361055.2018.1499393
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Efficient laser acceleration of deuteron ions through optimization of pre-plasma formation for neutron source development (2018)
  • Author(s): Sunahara Atsushi、Asahina Takashi、Nagatomo Hideo、Hanayama Ryohei、Mima Kunioki、Tanaka Hiroki、Kato Yoshiaki、Nakai Sadao
  • Journal Title: Plasma Physics and Controlled Fusion Volume: 61 Issue: 2 Pages: 025002-025002
  • DOI: 10.1088/1361-6587/aaeb7b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Numerical study of core formation of asymmetrically driven cone-guided targets (2017)
  • Author(s): H. Sawada, and H. Sakagami
  • Journal Title: Physics of Plasmas Volume: 24 Issue: 10 Pages: 100703-100703
  • DOI: 10.1063/1.4996256
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Compression and electron beam heating of solid target under the external magnetic field for fast ignition (2017)
  • Author(s): H. Nagatomo, T. Johzaki, T. Asahina, M. Hata, K. Matsuo, S. Lee, A. Sunahara, H. Sakagami, K. Mima, K. Iwano, S. Fujioka, H. Shiraga, and H. Azechi
  • Journal Title: Nuclear Fusion Volume: 57 Issue: 8 Pages: 086009-086009
  • DOI: 10.1088/1741-4326/aa74f0
  • Peer Reviewed
• [Journal Article] Improvement in the heating efficiency of fast ignition inertial confinement fusion through suppression of the preformed plasma (2017)
  • Author(s): Y. Arikawa, S. Kojima, A. Morace, M. Hata, S. Sakata, S. Fujioka, T. Kawashima, Y. Hironaka, K. Shigemori, Y. Abe, Z. Zhang, X. Vaisseau, S. Lee, T. Gawa, K. Matsuo, K.F.F. Law, Y. Kato, S. Matsubara, S. Tosaki, A. Yogo, H. Nagatomo, et al.
  • Journal Title: Nuclear Fusion Volume: 57 Issue: 23 Pages: 066022-066022
  • DOI: 10.1063/1.5016531
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetohydrodynamics of laser-produced high-energy-density plasma in a strong external magnetic field (2017)
  • Author(s): K. Matsuo, H. Nagatomo, Z. Zhang, P. Nicolai, T. Sano, S. Sakata, S. Kojima, S. Ho Lee, K.F.F. Law, Y. Arikawa, Y. Sakawa, T. Morita, Y. Kuramitsu, S. Fujioka, H. Azechi
  • Journal Title: Physical Review E Volume: 95 Issue: 5 Pages: 053204-053204
  • DOI: 10.1103/physreve.95.053204
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Boosting laser-ion acceleration with multi-picosecond pulses (2017)
  • Author(s): A Yogo, K Mima, N Iwata, S Tosaki, A Morace, Y Arikawa, S Fujioka, T Johzaki, Y Sentoku, H Nishimura, A Sagisaka, K Matsuo, N Kamitsukasa, S Kojima, H Nagatomo, M Nakai, H Shiraga, M Murakami, S Tokita, J Kawanaka, N Miyanaga, K Yamanoi, T Norimatsu, H Sakagami, SV Bulanov, K Kondo, H Azechi
  • Journal Title: Scientific Report Volume: 7 Issue: 1 Pages: 42451-42451
  • DOI: 10.1038/srep42451
  • Peer Reviewed / Open Access
• [Journal Article] Integrated simulation of magnetic-field-assist fast ignition laser fusion (2017)
  • Author(s): T Johzaki, H Nagatomo, A Sunahara, Y Sentoku, H Sakagami, M Hata, T Taguchi, K Mima, Y Kai, D Ajimi, T Isoda, T Endo, A Yogo, Y Arikawa, S Fujioka, H Shiraga, H Azechi
  • Journal Title: Plasma Physics and Controlled Fusion Volume: 59 Issue: 1 Pages: 014045-014045
  • DOI: 10.1088/0741-3335/59/1/014045
  • URL: http://iopscience.iop.org/article/10.1088/0741-3335/59/1/014045/meta
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Effects of radiation reaction in the interaction between cluster media and high intensity lasers in the radiation dominant regime (2016)
  • Author(s): Natsumi Iwata, Hideo Nagatomo, Yuji Fukuda, Ryutaro Matsui, and Yasuaki Kishimoto
  • Journal Title: Physics of Plasmas Volume: 23 Issue: 6 Pages: 063115-063115
  • DOI: 10.1063/1.4954152
  • NAID: 120006578917
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Kinetic simulation of electron transport using electron magnethydrodynamic structures (2016)
  • Author(s): M. Hata, H. Sakagami, and A. Das
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012027-012027
  • DOI: 10.1088/1742-6596/688/1/012027
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electron beam guiding by strong longitudinal magnetic fields (2016)
  • Author(s): T. Johzaki, K. Mima, S. Fujioka, H. Sakagami, A. Sunahara, H. Nagatomo, H. Shiraga
  • Journal Title: Journal of Physics Volume: 688 Pages: 012041-012041
  • DOI: 10.1088/1742-6596/688/1/012041
  • Peer Reviewed
• [Journal Article] Integrated simulations for ion beam assisted fast ignition (2016)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, and H. Nagatomo
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012096-012096
  • DOI: 10.1088/1742-6596/688/1/012096
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effects of the irradiation of a finite number of laser beams on the implosion of a cone-guided target (2016)
  • Author(s): T. Yanagawa, H. Sakagami, H. Nagatomo, and A. Sunahara
  • Journal Title: J. Phys.: Conf. Series Volume: 688 Pages: 012127-012127
  • DOI: 10.1088/1742-6596/688/1/012127
  • Peer Reviewed
• [Journal Article] Electron beam guiding by external magnetic fields in imploded fuel plasma (2016)
  • Author(s): T Johzaki, Y Sentoku, H Nagatomo, A Sunahara, H Sakagami, S Fujioka, H Shiraga, T Endo
  • Journal Title: Journal of Physics: Conference Series Volume: 717 Pages: 012025-012025
  • DOI: 10.1088/1742-6596/717/1/012025
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Study of fast electron generation using multi beam of LFEX-class laser (2016)
  • Author(s): M. Hata, H. Sakagami, T. Johzaki, Y. Sentoku, and H. Nagatomo
  • Journal Title: J. Phys.: Conf. Series Volume: 717 Pages: 012037-012037
  • DOI: 10.1088/1742-6596/717/1/012037
  • Peer Reviewed / Open Access
• [Journal Article] An optimum design of implosion with external magnetic field for electron beam guiding in fast ignition (2016)
  • Author(s): H. Nagatomo, T Johzaki, T Asahina, K Matsuo, 他
  • Journal Title: J. Phys.: Conf. Series Volume: 717 Pages: 012041-012041
  • DOI: 10.1088/1742-6596/717/1/012041
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Simulation analysis for ion assisted fast ignition using structured targets (2016)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, and H. Nagatomo
  • Journal Title: J. Phys.: Conf. Series Volume: 717 Pages: 012046-012046
  • DOI: 10.1088/1742-6596/717/1/012046
  • Peer Reviewed / Open Access
• [Journal Article] Direct heating of compressed core by ultra-intense laser (2016)
  • Author(s): A. Sunahara, T. Johzaki, H. Sakagami, H. Nagatomo, K. Mima, Y. Abe, Y. Arikawa, S. Fujioka, H. Shiraga, H. Azechi, Y. Mori, Y. Sentoku and Y. Kitagawa
  • Journal Title: J. Phys.: Conf. Series Volume: 717 Pages: 012055-012055
  • DOI: 10.1088/1742-6596/717/1/012055
  • Peer Reviewed
• [Journal Article] The formation mechanism of the periodic nanograting structure by the Weibel instability (2016)
  • Author(s): A. M. Gouda, H. Sakagami, T. Ogata, M. Hashida, and S. Sakabe
  • Journal Title: Appl. Phys. A Volume: 122 Issue: 4 Pages: 454-454
  • DOI: 10.1007/s00339-016-9958-1
  • Peer Reviewed
• [Journal Article] Orientation of periodic grating structures controlled by double-pulse irradiation (2016)
  • Author(s): M. Hashida, T. Nishii, Y. Miyasaka, H. Sakagami, M. Shimizu, S. Inoue, and S. Sakabe
  • Journal Title: Appl. Phys. A Volume: 122 Issue: 4 Pages: 484-484
  • DOI: 10.1007/s00339-016-0011-1
  • Peer Reviewed
• [Journal Article] Formation Mechanism of a Periodic Nanograting Structure by a Surface Plasma Wave (2016)
  • Author(s): A. M. Gouda, H. Sakagami, T. Ogata, M. Hashida, and S. Sakabe
  • Journal Title: Plasma and Fusion Research Volume: 11 Issue: 0 Pages: 2401071-2401071
  • DOI: 10.1585/pfr.11.2401071
  • NAID: 130005330452
  • ISSN: 1880-6821
  • Peer Reviewed
• [Presentation] 収束磁場を用いたレーザー生成電子ビームによる高密度物質高効率加熱 (2020)
  • Author(s): 城崎知至，武田志十朗, 樋野雅也, 金佑勁, 遠藤琢磨, 藤岡慎介, 千徳靖彦, 長友英夫, 砂原淳
  • Organizer: 日本物理学会(18pD11-13)
• [Presentation] 高速点火レーザー核融合におけるダブルコーンターゲットによる高速電子の集束効果 (2020)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫，千徳靖彦
  • Organizer: 日本物理学会(18pD11-14)
• [Presentation] Particle Beam Energy Dependence on Core Heating Property in Ion Assisted Fast Ignition (2019)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, H. Nagatomo, and Y. Sentoku
  • Organizer: 9th International Conference on The Frontiers of Plasma Physics and Technology, Negombo, Sri Lanka
  • Int'l Joint Research / Invited
• [Presentation] Ignition requirement for HBRPA C6+ beam driven fast ignition (2019)
  • Author(s): T. Johzaki, Y. Kai, K. Tsuchikawa, S. Hieda, W. Kim, T. Endo, Y. Sentoku, A. Sunahara
  • Organizer: 46th EPS Conf. on Plasma Physics, Milan, Italy
  • Int'l Joint Research
• [Presentation] Effects of laser focusing on plasma channeling by ultrahigh intense laser in fast ignition (2019)
  • Author(s): H. Sakagami, M. Yoshimoto, H. Habara, and K. A. Tanaka
  • Organizer: 46th EPS Conf. on Plasma Physics, Milan, Italy
  • Int'l Joint Research
• [Presentation] Converging Effects of Fast Electrons by Double-Cone Targets in Fast Ignition (2019)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, H. Nagatomo, and Y. Sentoku
  • Organizer: 11th Int. Conf. on Inertial Fusion Sciences and Applications, Osaka, Japan
  • Int'l Joint Research
• [Presentation] Intensification of Laser-produced Relativistic Electron Beam Using Converging Magnetic Fields for Ignition in Fast Ignition Laser Fusion (2019)
  • Author(s): T. Johzaki, S. Takeda, M. Hino, W. Kim, T. Endo, S. Fujioka, Y. Sentoku, H. Nagatomo, and A. Sunahara
  • Organizer: 11th Int. Conf. on Inertial Fusion Sciences and Applications, Osaka, Japan
  • Int'l Joint Research
• [Presentation] Effects of mixed beam irradiation with different wavelengths on fast electron generation (2019)
  • Author(s): M. Hata, Y. Arikawa, H. Nagatomo, and Y. Sentoku
  • Organizer: 11th Int. Conf. on Inertial Fusion Sciences and Applications, Osaka, Japan
  • Int'l Joint Research
• [Presentation] Improvement of Laser absorption Simulation by Ray Tracing Method in Laser Fusion (2019)
  • Author(s): T. Otsu, H. Sakagami, and A. Sunahara
  • Organizer: 11th Int. Conf. on Inertial Fusion Sciences and Applications, Osaka, Japan
  • Int'l Joint Research
• [Presentation] High-intense laser propagation into strongly magnetized dense plasma (2019)
  • Author(s): M. Hata, T. Sano, H. Sakagami, Y. Sentoku, and H. Nagatomo
  • Organizer: 61st Annual Meeting of the APS Division of Plasma Physics, Fort Lauderdale, FL
  • Int'l Joint Research
• [Presentation] An optimum design of a cone-inserted target implosion for reactor scale Fast Ignition (2019)
  • Author(s): H. Nagatomo, T. Johzaki, M. Hata, Y. Sentoku, H. Sakagami
  • Organizer: 3rd Asia-Pacific Conference on Plasma Physics, Hefei, China
  • Int'l Joint Research / Invited
• [Presentation] レーザー核融合における光線追跡法の高速計算法の開発および評価 (2019)
  • Author(s): 大津貴志, 坂上仁志, 砂原淳
  • Organizer: 日本物理学会(11pK22-1)
• [Presentation] 高速点火における超高強度レーザープラズマチャネリングに対する複数イオン種の効果 (2019)
  • Author(s): 坂上仁志，羽原英明
  • Organizer: 日本物理学会(11pK22-2)
• [Presentation] 電磁粒子コードによるレーザ誘起ナノ周期構造の形成シミュレーション (2019)
  • Author(s): 坂上仁志
  • Organizer: 第92回レーザ加工学会講演会
  • Invited
• [Presentation] 収束磁場下における相対論電子ビームの輸送特性 (2019)
  • Author(s): 城崎知至，武田志十朗，堀尾美衣，金佑勁，遠藤琢磨，砂原淳
  • Organizer: 日本物理学会(15aK310-2)
• [Presentation] レーザー核融合における光線追跡法によるレーザー吸収シミュレーションの高精度化 (2019)
  • Author(s): 大津貴志, 坂上仁志, 砂原淳
  • Organizer: 日本物理学会(15aK310-6)
• [Presentation] Radiation hydrodynamic simulation with nonlocal electron thermal conduction model in external magnetic field (2018)
  • Author(s): H. Nagatomo
  • Organizer: 3rd International Conference on Matter and Radiation at Extremes, Qingdao, China, May 6-11 (2018).
  • Int'l Joint Research / Invited
• [Presentation] Effects of strong external magnetic field on high-intense laser propagation into dense plasma (2018)
  • Author(s): M. Hata, H. Sakagami, T. Sano, Y. Sentoku, and H. Nagatomo
  • Organizer: 45th EPS Conf. on Plasma Physics, Prague, Czech Republic, July 2 - 6, P4.2022 (2018).
  • Int'l Joint Research
• [Presentation] Integrated simulation analysis of core heating property for ion assisted fast ignition using low-density structured plastic foam (2018)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, H. Nagatomo, and Y. Sentoku
  • Organizer: 45th EPS Conf. on Plasma Physics, Prague, Czech Republic, July 2 - 6, P4.2025 (2018).
  • Int'l Joint Research
• [Presentation] Effects of Multi Ion Species on Plasma Channeling by Ultrahigh Intense Laser in Fast Ignition (2018)
  • Author(s): H. Sakagami, H. Habara, M. Yoshimoto, and K. A. Tanaka
  • Organizer: 35th European Conf. on Laser Interaction with Matter, Rethymno, Crete, Greece, October 22-26, Poster 7 (2018).
  • Int'l Joint Research
• [Presentation] Inhibition mechanism of high-intense laser propagation into strongly magnetized dense plasma (2018)
  • Author(s): M. Hata, T. Sano, H. Sakagami, Y. Sentoku, and H. Nagatomo
  • Organizer: 35th European Conf. on Laser Interaction with Matter, Rethymno, Crete, Greece, October 22-26, Poster 11 (2018).
  • Int'l Joint Research
• [Presentation] Magnetic field guiding of electron beam for reduction of ignition requirement in fast ignition laser fusion (2018)
  • Author(s): T. Johzaki, M. Horio, S. Takeda, W. Kim, T. Endo, H. Nagatomo, S. Fujioka , and A. Sunahara
  • Organizer: 60th Annual Meeting of the APS Division of Plasma Physics, Oregon Convention Center, Portland, Oregon USA, Oral, November 5 (2018).
  • Int'l Joint Research
• [Presentation] Double structure of ions in 2D particle in cell laser plasma simulation (2018)
  • Author(s): M. Yoshimoto, S. Kawazu, H. Sakagami, and H. Habara
  • Organizer: 2nd Asia-Pacific Conference on Plasma Physics, Kanazawa, Japan, November 12 -17, LP-23 (2018).
  • Int'l Joint Research
• [Presentation] イオン補助加熱高速点火レーザー核融合におけるコア加熱のエネルギー依存性 (2018)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫，千徳靖彦
  • Organizer: 日本物理学会(11pC102-1)
• [Presentation] 電子ビーム磁場ガイドによる点火条件緩和効果I (2018)
  • Author(s): 城崎知至，武田志十朗，堀尾美衣，金佑勁，遠藤琢磨，砂原淳
  • Organizer: 日本物理学会(11pC102-2)
• [Presentation] レーザー核融合磁化高速点火方式によるコア加熱統合シミュレーション (2018)
  • Author(s): 城崎知至，長友英夫，千徳靖彦，藤岡慎介，坂田匠平，砂原淳
  • Organizer: 第35回 プラズマ・核融合学会年会(3Dp03)
• [Presentation] 粒子シミュレーションによるナノ周期構造形成機構の解析 (2018)
  • Author(s): 坂上仁志，橋田昌樹，阪部周二
  • Organizer: レーザー学会
  • Invited
• [Presentation] 外部磁場印加高密度プラズマ中における高強度レーザー伝播 (2018)
  • Author(s): 畑昌育，佐野孝好，坂上仁志，千徳靖彦，長友英夫
  • Organizer: レーザー学会
• [Presentation] Effects of strong external magnetic fields on high-intense laser light propagation into high-density plasma (2018)
  • Author(s): M. Hata, H. Sakagami, T. Sano, Y. Sentoku, and H. Nagatomo
  • Organizer: 14th Direct Drive and Fast Ignition Workshop
  • Int'l Joint Research
• [Presentation] イオン補助加熱高速点火レーザー核融合におけるコア加熱の2次元統合シミュレーション (2018)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫，千徳靖彦
  • Organizer: 日本物理学会
• [Presentation] 光庄加速C6+ビーム駆動高速点火レーザー核融合の統合シミュレーション (2018)
  • Author(s): 城崎知至, 甲斐祐亮, 土川晃平, 日永田将, 金佑勁, 遠藤琢磨, 千徳靖彦, 砂原淳
  • Organizer: 日本物理学会
• [Presentation] High intensity laser propagation in strongly magnetized plasma (2018)
  • Author(s): M. Hata
  • Organizer: JIFT Japan-US workshop on Theory and simulation on the high field and high energy density physics
  • Int'l Joint Research
• [Presentation] Laser Plasma Interactions for Super-penetration Mode in Fast Ignition (2018)
  • Author(s): H. Sakagami
  • Organizer: JIFT Japan-US workshop on Theory and simulation on the high field and high energy density physics
  • Int'l Joint Research
• [Presentation] Ignition requirement for RPA C6+ beam driven fast ignition (2018)
  • Author(s): T. Johzaki
  • Organizer: JIFT Japan-US workshop on Theory and simulation on the high field and high energy density physics
  • Int'l Joint Research
• [Presentation] Radiation hydrodynamic simulation of pre-formed plasmas on TNSA laser acceleration and magnetized fast ignition (2018)
  • Author(s): A. Sunahara
  • Organizer: JIFT Japan-US workshop on Theory and simulation on the high field and high energy density physics
  • Int'l Joint Research
• [Presentation] Non-local electron thermal conduction models for radiation hydrodynamic simulation (2018)
  • Author(s): H. Nagatomo
  • Organizer: JIFT Japan-US workshop on Theory and simulation on the high field and high energy density physics
  • Int'l Joint Research
• [Presentation] Integrated Simulations of Core Heating for Ion Assisted Fast Ignition using Low-Density Foam Targets (2017)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara and H. Nagatomo
  • Organizer: 8th International Conference on The Frontiers of Plasma Physics and Technology,
  • Int'l Joint Research / Invited
• [Presentation] Effect of external and self-generated magnetic field in formation of pre-plasma due to the pre-pulse of ultra-intense laser (2017)
  • Author(s): H. Nagatomo, A. Sunahara, K. Mima, R. Hanayama
  • Organizer: CLES/LANSA’17
  • Int'l Joint Research
• [Presentation] Simulation analysis of fast electron characteristics for counter-beam heating in fast ignition (2017)
  • Author(s): H. Sakagami, Y. Mori, T. Johzaki, A. Sunahara, Y. Sentoku, R. Hanayama, K. Ishii, and Y. Kitagawa
  • Organizer: 44th EPS Conf. on Plasma Physics
  • Int'l Joint Research
• [Presentation] Effects of strong external magnetic fields on laser-plasma-interactions (2017)
  • Author(s): M. Hata, H. Sakagami, Y. Sentoku, and H. Nagatomo
  • Organizer: 10th Int. Conf. on Inertial Fusion Sciences and Applications
  • Int'l Joint Research
• [Presentation] High-rhoR target design relevant to Fast Ignition (2017)
  • Author(s): H. Nagatomo, T. Asahina, T. Johzaki, Y. Sentoku, M. Hata, H. Sakagami, and K. Mima
  • Organizer: 10th Int. Conf. on Inertial Fusion Sciences and Applications
  • Int'l Joint Research
• [Presentation] Core heating dynamics in magnetized fast ignition (2017)
  • Author(s): T. Johzaki, H. Nagatomo, Y. Sentoku, A. Sunahara, T. Taguchi, H. Sakagami, S. Fujioka, S. Sakata, S. Lee, H. Shiraga and FIREX Project Team
  • Organizer: 10th Int. Conf. on Inertial Fusion Sciences and Applications
  • Int'l Joint Research
• [Presentation] Integrated Simulations for Ion Assisted Fast Ignition using Low-density Foam Structured Targets (2017)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara, H. Nagatomo, and Y. Sentoku
  • Organizer: 10th Int. Conf. on Inertial Fusion Sciences and Applications
  • Int'l Joint Research
• [Presentation] Demonstration of Efficient Core Heating of Magnetized Fast Ignition in FIREX project (2017)
  • Author(s): T. Johzaki, Y. Sentoku, A. Sunahara, T. Morikawa, T. Endo
  • Organizer: 59th Annual Meeting of the APS Division of Plasma Physics
  • Int'l Joint Research / Invited
• [Presentation] Validation of non-local electron heat conduction model for radiation MHD simulation in magnetized laser plasma (2017)
  • Author(s): H. Nagatomo, T. Asahina, K. Matsuo, S. Fujioka, Ph. Nicolai, T. Johzaki
  • Organizer: 59th Annual Meeting of the APS Division of Plasma Physics
  • Int'l Joint Research
• [Presentation] 磁化高点火レーザー核融合の高効率加熱実証と点 火への展望 (2017)
  • Author(s): 城崎知至
  • Organizer: Plasma Conference 2017
  • Invited
• [Presentation] 強磁場中の高強度レーザープラズマ相互作用 (2017)
  • Author(s): 畑昌育，坂上仁志，佐野孝好，千徳靖彦，長友英夫
  • Organizer: Plasma Conference 2017
• [Presentation] 対向レーザー照射系における爆縮の3次元流体シミュレーション (2017)
  • Author(s): 坂上仁志，岩本晃史，砂原淳，千徳靖彦，森芳孝，花山良平，石井勝弘，北川米喜，関根尊史，栗田隆史，竹内康樹，加藤義則，佐藤仲弘，栗田典夫，川嶋利幸，米田修，日置辰視，元廣友美，三浦永祐
  • Organizer: Plasma Conference 2017
• [Presentation] 磁場中の非局所電子熱伝導モデルを導入した輻射流体シミュレーション, (2017)
  • Author(s): 長友英夫，朝比奈隆志，城崎知至
  • Organizer: 第31数値流体力学シンポジウム
• [Presentation] 強磁場中の高強度レーザープラズマ相互作用に関する研究II (2017)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，長友英夫
  • Organizer: 日本物理学会第７２回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス
• [Presentation] レーザー核融合の爆縮シミュレーションにおける非局所電子熱伝導モデルの影響 (2017)
  • Author(s): 長友英夫, 朝比奈隆志, 砂原淳, 城﨑知至
  • Organizer: 日本物理学会第７２回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス
• [Presentation] キロテスラ級強磁場下での相対論レーザープラズマ相互作用(1)電子加速 (2017)
  • Author(s): 城崎知至, 甲斐祐亮, 武田志十朗, 遠藤琢磨, 千徳靖彦, 畑昌育, 田口敏弘, 三間圀興
  • Organizer: 日本物理学会第７２回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス
• [Presentation] イオン補助加熱高速点火レーザー核融合におけるコア加熱のレーザーパルス依存性 (2017)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫，千徳靖彦
  • Organizer: 日本物理学会第７２回年次大会
  • Place of Presentation: 大阪大学豊中キャンパス
• [Presentation] Effect of non-local electron conduction in compression of solid ball target for fast ignition (2016)
  • Author(s): H. Nagatomo, T. Asahina, T. Johzaki, P. Nicolai
  • Organizer: 58th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: San Jose, CA, USA
  • Year and Date: 2016-10-31
  • Int'l Joint Research
• [Presentation] Compression and Electron Beam Heating of Solid Target under the External Magnetic Field for Fast Ignition (2016)
  • Author(s): H. Nagatomo, T. Johzaki, K. Matsuo, T. Asahina. S.LeesM. Hata, Sunahara, S. Fujioka, K. Mima, H. Shiraga, H. Azechi, A. Sunahara, H. Sakagami
  • Organizer: 26th Fusion Energy Conference, International Atomic Energy Agency
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 2016-10-17
  • Int'l Joint Research
• [Presentation] Influence of strong external magnetic fields on laser-plasma-interactions and characteristics of the generated electrons (2016)
  • Author(s): M. Hata, H. Sakagami, T. Johzaki, Y. Sentoku, and H. Nagatomo
  • Organizer: 34th European Conference on Laser Interaction with Matter
  • Place of Presentation: Moscow, Russia
  • Year and Date: 2016-09-18
  • Int'l Joint Research
• [Presentation] Short wavelength effects on fast electron generation in fast ignition (2016)
  • Author(s): H. Sakagami, R. Sato, T. Johzaki, A. Sunahara, Y. Arikawa and H. Nagatomo
  • Organizer: 43rd EPS Conf. on Plasma Physics
  • Place of Presentation: Leuven, Belgium
  • Year and Date: 2016-07-04
  • Int'l Joint Research
• [Presentation] Integrated simulation of magnetic-field-assist fast ignition laser fusion (2016)
  • Author(s): T. Johzaki, R. Kai, D. Ajimi, T. Endo, H. Nagatomo, A. Sunahara, Y. Sentoku, H. Sakagami, M. Hata, T. Taguchi, K. Mima, A. Yogo, Y. Arikawa, S. Fujioka, H. Shiraga, H. Azechi and FIREX project
  • Organizer: 43rd EPS Conf. on Plasma Physics
  • Place of Presentation: Leuven, Belgium
  • Year and Date: 2016-07-04
  • Int'l Joint Research / Invited
• [Presentation] Characteristics of Fast Electrons Generated by Multi Beam of LFEX Laser (2016)
  • Author(s): M. Hata, H. Sakagami, T. Johzaki, Y. Ssentoku, and H. Nagatomo
  • Organizer: 14th International workshop on fast ignition and high field physics with high power lasers
  • Place of Presentation: Yokohama, Japan
  • Year and Date: 2016-05-17
  • Int'l Joint Research
• [Presentation] Integrated Simulations of Core Heating for Ion Assisted Fast Ignition (2016)
  • Author(s): H. Sakagami, T. Johzaki, A. Sunahara and H. Nagatomo
  • Organizer: 14th International workshop on fast ignition and high field physics with high power lasers
  • Place of Presentation: Yokohama, Japan
  • Year and Date: 2016-05-17
  • Int'l Joint Research
• [Presentation] Solid Target Compression Under the Strong Magnetic Field for Fast Ignition (2016)
  • Author(s): H. Nagatomo, T. Johzaki, K. Matsuo, T. Asahina, S. Lee, A. Hata, S. Fujioka, K. Mima, A. Sunahara, H. Sakagami
  • Organizer: 14th International workshop on fast ignition and high field physics with high power lasers
  • Place of Presentation: Yokohama, Japan
  • Year and Date: 2016-05-17
  • Int'l Joint Research / Invited
• [Presentation] Temporal Evolution of External Magnetic Fields Applied to the Cone Target (2016)
  • Author(s): A. Sunahara, K.-F. Law, S. Sakata, S.-H. Lee, Y. Aarikawa, S. Fujioka, T. Johzaki, H. Sakagami, H. Nagatomo, H. Shiraga, H. Azechi, and FIREX Group
  • Organizer: 14th International workshop on fast ignition and high field physics with high power lasers
  • Place of Presentation: Yokohama, Japan
  • Year and Date: 2016-05-17
  • Int'l Joint Research
• [Presentation] Integrated Simulation of Imploded Core Heating for the FIREX project (2016)
  • Author(s): T. Johzaki, H. Nagatomo, Y. Sentoku, H. Sakagami, A. Sunahara, S. Fujioka, A. Yogo, H. Shiraga, H. Azechi, and FIREX Project Group
  • Organizer: 14th International workshop on fast ignition and high field physics with high power lasers
  • Place of Presentation: Yokohama, Japan
  • Year and Date: 2016-05-17
  • Int'l Joint Research / Invited
• [Presentation] Formation Mechanism of Periodic Nano-Grating Structures by Nonrelativistic Intensity Laser (2016)
  • Author(s): A. M. Gouda, H. Sakagami, M. Hashida, and S. Sakabe
  • Organizer: 第85回レーザー加工学会講演会
  • Place of Presentation: 大阪大学吹田キャンパス
• [Presentation] 粒子シミュレーションによる高速点火レーザー核融合の物理の理解 (2016)
  • Author(s): 畑昌育，小島完興，坂田匠平，坂上仁志，城崎知至，千徳靖彦，長友英夫
  • Organizer: 第１１回核融合エネルギー連合講演会
  • Place of Presentation: 九州大学伊都キャンパス
• [Presentation] 高速点火のため外部磁場中の燃料球圧縮 (2016)
  • Author(s): 長友英夫, 城﨑知至, 朝比奈隆志, 砂原淳, 坂上仁志
  • Organizer: 第１１回核融合エネルギー連合講演会
  • Place of Presentation: 九州大学伊都キャンパス
• [Presentation] 磁化高速点火におけるコア加熱特性 (2016)
  • Author(s): 城崎知至, 長友英夫，千徳靖彦, 砂原淳，坂上仁志, 甲斐祐亭，遠藤琢磨，藤岡慎介, 余語覚文，有川安信
  • Organizer: 第１１回核融合エネルギー連合講演会
  • Place of Presentation: 九州大学伊都キャンパス
• [Presentation] 中実球の高密度圧縮における高速電子の影響の評価 (2016)
  • Author(s): 長友英夫, 朝比奈隆志, 砂原淳, 城﨑知至
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学角間キャンパス
• [Presentation] コーン付CD中実球のレーザー生成高速電子ビームによる加熱特性解析I (2016)
  • Author(s): 城崎知至, 長友英夫, 砂原淳, 千徳靖彦, 坂上仁志, 田口俊弘, 藤岡慎介, 白神宏之, FIREXプロジェクトグループ
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学角間キャンパス
• [Presentation] イオン補助加熱高速点火におけるコア加熱の統合シミュレーション (2016)
  • Author(s): 坂上仁志，城崎知至，砂原淳，長友英夫
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学角間キャンパス
• [Presentation] 強磁場中の高強度レーザープラズマ相互作用に関する研究 (2016)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，長友英夫
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学角間キャンパス
• [Presentation] シェル内面への高強度レーザー照射による磁場生成 (2016)
  • Author(s): 砂原淳，畑昌育，安部勇輝，李昇浩，尾崎哲，城崎知至，長友英夫，有川安信， 藤岡慎介，坂上仁志，中井光男，白神宏之，乗松孝好，疇地宏
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学角間キャンパス
• [Presentation] 電子ビーム駆動高速点火レーザー核融合における核融合点火条件(1) (2016)
  • Author(s): 城﨑知至, 長友英夫, 砂原淳, 千徳靖彦, 甲斐祐亮, 遠藤琢磨
  • Organizer: プラズマ・核融合学会第３３回年会
  • Place of Presentation: 東北大学青葉山キャンパス
• [Presentation] 輻射-電磁流体コードへの非局所電子熱伝導モデルの導入 (2016)
  • Author(s): 長友英夫，朝比奈隆志，砂原淳，城﨑知至
  • Organizer: プラズマ・核融合学会第３３回年会
  • Place of Presentation: プラズマ・核融合学会第３３回年会