Collisionless shock generation using high-power laser produced super-sonic plasma jet

2011 Fiscal Year Final Research Report

• Project/Area Number: 21340172
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plasma science
• Research Institution: Osaka University
• Principal Investigator: SAKAWA Youichi 大阪大学, レーザーエネルギー学研究センター, 准教授 (70242881)
• Co-Investigator(Kenkyū-buntansha): KURAMITSU Yasuhiro 大阪大学, レーザーエネルギー学研究センター, 特任助教 (70456929) ; KATO Tsunehiko 広島大学, 理学研究科, 特任助教 (90413955) ; TAKABE Hideaki 大阪大学, レーザーエネルギー学研究センター, 教授 (20150352) ; YONEDA Hitoki 電気通信大学, レーザー新世代研究センター, 教授 (00210790)
• Co-Investigator(Renkei-kenkyūsha): OZAKI Norimasa 大阪大学, 工学研究科, 助教 (70432515) ; KODAMA Ryousuke 大阪大学, 工学研究科, 教授 (80211902)
• Project Period (FY): 2009 – 2011
• Keywords: プラズマ物理 / 無衝突衝撃波 / 超音速プラズマジェット / 高出力レーザー

Research Abstract

Collisionless shochs are generated in high-speed counter-streaming plasma flows produced by irradiating high-power laser beams of Gekko XII HIPER laser system on a CH double-plane target with 4. 6mm in separation. The plasmas and shocks are diagnosed by shadowgraphy, interferometry, and self-emission measurements using ICCD cameras and streak cameras. Collisionless electrostatic shocks are generated in front of the fist CH plane where laser beams are irradiated. Thomson scattering ion-term measurements provide shock parameters, such as electron and ion temperatures, electron density, and flow velocities, both at the up-and down-stream of a shock.

Research Products

• [Journal Article] Kelvin-Helmholtz Turbulence Associated with Collisionless Shocks in Laser Produced Plasmas (2012)
  • Author(s): Y. Kuramitsu, Y. Sakawa, S. Dono, C. D. Gregory, S. A. Pikuz, B. Loupias, M. Koenig, J. N. Waugh, N. Woolsey, T. Morita, T. Moritaka, T. Sano, Y. Matsumoto, A. Mizuta, N. Ohnishi, and H. Takabe
  • Journal Title: Physical Review Letters Volume: 108 Pages: 195004-1-5
• [Journal Article] Characterizing counter-streaming interpenetrating plasmas relevant to astrophysical collisionless shocks (2012)
  • Author(s): J. S. Ross, 他13名, Y. Kuramitsu, T. Morita, Y. Sakawa, H. Takabe, 他15名
  • Journal Title: Physics of Plasmas Volume: 19 Pages: 056501-1-8
• [Journal Article] On the universality of nonthermal electron acceleration due to quasi-turbulent wakefield (2012)
  • Author(s): Yasuhiro Kuramitsu, Youichi Sakawa, Masahiro Hoshino, Shih-Hung Chen, Hideaki Takabe
  • Journal Title: High Energy Density Physics Volume: 8 Pages: 266-270
• [Journal Article] Collisionless shockwaves formed by counter-streaming laser-produced plasmas (2011)
  • Author(s): X. Liu, 他7名, Y. Sakawa, T. Morita, Y. Kuramitsu, 他13名
  • Journal Title: New Journal of Physics Volume: 13 Pages: 093001
• [Journal Article] Time Evolution of a Collisionless Shock in Counterstreaming Laser Produced Plasmas (2011)
  • Author(s): Y. Kuramitsu, Y. Sakawa, H. Takabe, T. Morita, 他7名
  • Journal Title: Physical Review Letters Volume: 106 Pages: 175002
• [Journal Article] 高強度レーザーを用いた宇宙物理実験 (2011)
  • Author(s): 坂和洋一, 蔵満康浩, 森田太智, 加藤恒彦, 高部英明
  • Journal Title: レーザー研究 Volume: 39 Pages: 05-11
• [Journal Article] Experimental Evidence of Nonthermal Acceleration of Relativistic Electrons by an Intensive Laser Pulse (2011)
  • Author(s): Y. Kuramitsu, 他2名, Y. Sakawa, 他17名
  • Journal Title: Physical Review Volume: E83 Pages: 026401-1-6
• [Journal Article] Model Experiment of Cosmic Ray Acceleration due to an Incoherent Wakefield Induced by an Intensive Laser Pulse (2011)
  • Author(s): Y. Kuramitsu, 他2名, Y. Sakawa, 他17名
  • Journal Title: Physics of Plasmas Volume: 18 Pages: 010701-1-4
• [Journal Article] Collisionless shock generation in high-speed counter-streaming plasma flows by a high-power laser (2010)
  • Author(s): T. Morita, Y. Sakawa, Y. Kuramitsu, 他8名, H. Takabe, J. Zhang
  • Journal Title: Physics of Plasmas Volume: 17 Pages: 122702-1-6
• [Journal Article] 高出力レーザーを用いた実験室宇宙物理実験 (2010)
  • Author(s): 坂和洋一, 蔵満康浩, 森田太智, 高部英明
  • Journal Title: プラズマ・核融合学会誌 Volume: 86 Pages: 578-581
• [Presentation] HIGH-POWER LASER EXPERIMENTS TO STUDY COLLISIONLESS SHOCK GENERATION (2011)
  • Author(s): Y. Sakawa, 他
  • Organizer: International Conference on Inertial Fusion Science and Applications(IFSA2011)
  • Place of Presentation: Bordeaux, France
  • Year and Date: 20110912-16
• [Presentation] Laboratory experiments to study collisionless shock generation in high-power laser produced counter-streaming plasmas (2010)
  • Author(s): Y. Sakawa, 他
  • Organizer: 31st European Conference on Laser Interaction with Matter(XXXI ECLIM)
  • Place of Presentation: Budapest, Danubius Hotel Gellert, Hungary
  • Year and Date: 20100906-10
• [Presentation] Collisionless shock generation in high-power laser produced counter-streaming plasmas (2010)
  • Author(s): Y. Sakawa, 他
  • Organizer: 8th International Conference on high Energy Density Laboratory Astrophysics(HEDLA 2010)
  • Place of Presentation: Cal Tech, California, USA
  • Year and Date: 20100315-18