Physics of interactions between ultrahigh intense laser and high energy density plasma under kilo tesla magnetic field

• Project/Area Number: 15K17798
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: Osaka University
• Principal Investigator: Hata Masayasu 大阪大学, レーザー科学研究所, 特別研究員(PD) (60712429)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 外部磁場 / レーザープラズマ相互作用 / 超高強度レーザー / 強磁場 / 高エネルギー密度プラズマ / 電磁粒子コード / 電磁粒子シミュレーション / 電子輸送

Outline of Final Research Achievements

Effects of strong external magnetic field on interactions between ultrahigh intense laser and plasma have been investigated in this study. When the external magnetic field is set to sub-kilo tesla, laser filament tend to grow along the direction of the external magnetic field. In addition, the expulsion of electrons inside the filament causes the compression of the magnetic field outside the filament. When the external magnetic field is enough strong namely 50 kilo-tesla, the linear dispersion relation of cold plasma shows that right-handed polarized laser can propagate to high-density region without cutoff, but it cannot penetrate high-density region except the front part of the laser pulse in simulation.

Research Products

• [Journal Article] Validation of thermal conductivity in magnetized plasmas using particle-in-cell simulations (2017)
  • Author(s): T. Asahina, H. Nagatomo, A. Sunahara, T. Johzaki, M. Hata, K. Mima, Y. Sentoku
  • Journal Title: Physics of Plasmas Volume: 24 Issue: 4 Pages: 042117-042117
  • DOI: 10.1063/1.4981233
  • Peer Reviewed / Acknowledgement Compliant
• [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] 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: Journal of Physics: Conference Series Volume: 未定
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [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: レーザー学会学術講演会第38回年次大会
• [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] Effects of strong external magnetic fields on laser-plasma-interactions (2017)
  • Author(s): M. Hata, H. Sakagami, Y. Sentoku, and H. Nagatomo
  • Organizer: 10th International Conference on Inertial Fusion Sciences and Applications
  • Int'l Joint Research
• [Presentation] High intensity laser-plasma interactions with strong external magnetic field (2017)
  • Author(s): M. Hata, H. Sakagami, T. Sano, Y. Sentoku, and H. Nagatomo
  • Organizer: Plasma Conference 2017
• [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] LFEXレーザーの複数ビーム照射により生成される高速電子の特性とその制御 (2016)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，砂原淳，長友英夫
  • Organizer: 日本物理学会第７１回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19
• [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] Influence of strong external magnetic fields on laser-plasma-interactions and characteristics of the generated fast 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: ロシア・モスクワ
  • Int'l Joint Research
• [Presentation] LFEXペタワットレーザーの複数ビーム照射により生成される高速電子の特性 (2015)
  • Author(s): 畑昌育，坂上仁志，城崎知至，千徳靖彦，砂原淳，長友英夫
  • Organizer: プラズマ・核融合学会第３２回年会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-11-24
• [Presentation] Study of fast electron generation using multi beam of LFEX-class laser (2015)
  • Author(s): M. Hata, H. Sakagami, T. Johzaki, Y. Sentoku, and H. Nagatomo
  • Organizer: 9th International Conference on Inertial Fusion Sciences and Applications (IFSA 2015)
  • Place of Presentation: Hyatt Regency Bellevue on Seattle's Eastside
  • Year and Date: 2015-09-20
  • Int'l Joint Research
• [Presentation] ペタワットレーザーの複数ビーム照射による高速電子生成に関する研究 (2015)
  • 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２０１５年秋季大会
  • Place of Presentation: 関西大学
  • Year and Date: 2015-09-16