Electron accelerations associated with magnetic turbulence in high-Mach-number collision-less shocks
| Project/Area Number |
26400266
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Chiba University |
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Principal Investigator |
Matsumoto Yosuke 千葉大学, 大学院理学研究科, 特任准教授 (20397475)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 宇宙線加速 / 衝撃波 / プラズマ / ＰＩＣシミュレーション / 乱流リコネクション / 大規模数値計算 / 無衝突衝撃波 / 磁気乱流 / 磁気リコネクション / PICシミュレーション / 衝撃波加速 / 電子加速 / 宇宙線 / 電子 |
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| Outline of Final Research Achievements |
We have examined multidimensional structures of high-Mach-number shocks by means of ab initio particle-in-cell simulations using the supercomputer K. We found that large-amplitude electrostatic waves at the leading edge and the magnetic turbulence in the transition layer coexist in such a strong-shock structure. In particular, spontaneous turbulent reconnection in the transition layer was found to be important for energizing electrons under sufficiently high Mach number condition (Matsumoto et al., Science, 2015). Recent 3D simulations also revealed a stochastic drift acceleration to be essentially important for producing relativistic electrons.
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Model Experiment of Magnetic Field Amplification in Laser-Produced plasmas via the Richtmyer-Meshkov instability2016
Author(s)
Y. Kuramitsu, N. Ohnishi, Y. Sakawa, T. Morita, H. Tanji, T. Ide, K. Nishio, C. D. Gregory, J. N. Waugh, N. Booth, R. Heathcote, C. Murphy, G. Gregori, J. Smallcombe, C. Barton, A. Diziere, M. Koenig, N. Woolsey, A Mizuta, T. Sugiyama, S. Matsukiyo, T. Moritaka, T. Sano, and H. Takabe
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Journal Title
Physics of Plasmas
Volume: 23
Issue: 3
Pages: 032126-032126
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] TIME EVOLUTION of KELVIN-HELMHOLTZ VORTICES ASSOCIATED with COLLISIONLESS SHOCKS in LASER-PRODUCED PLASMAS2016
Author(s)
Y. Kuramitsu, A. Mizuta, Y. Sakawa, H. Tanji, T. Ide, T. Sano, M. Koenig, A. Ravasio, A. Pelka, H. Takabe, C. D. Gregory, N. Woolsey, T. Moritaka, S. Matsukiyo, Y. Matsumoto, and N. Ohnishi
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Journal Title
The Astrophysical Journal
Volume: 828
Issue: 2
Pages: 93-93
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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