Study of collisionless shocks, particle acceleration and magnetic field generation by using large-scale plasma particle simulation
| Project/Area Number |
22740164
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Hiroshima University (2011)
Osaka University (2010) |
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Principal Investigator |
TSUNEHIKO Kato 広島大学, 大学院・理学研究科, 特任助教 (90413955)
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | プラズマ / 衝撃波 / 粒子加速 / 不安定性 / 磁場生成 / 宇宙物理学 / レーザー実験 / 宇宙物理 / 宇宙空間 / プラズマ・核融合 / 理論天文学 / 宇宙線 / 数値シミュレーション |
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| Research Abstract |
By using large-scale plasma particle simulations, we study high-Mach number collisionless shocks in weakly magnetized electron-proton plasmas, which are frequently driven in a variety of astrophysical environment, such as supernova remnants. It is shown that the Weibel instability is driven in the shock transition region even in perpendicular shocks, and then, turbulent magnetic fields are generated by this instability in the transition region and the downstream region. It is also found that in quasi-parallel shocks a particle acceleration mechanism similar to the Fermi acceleration works and efficiently generates high-energy particles with a power-law energy spectrum.
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Report
(3 results)
Research Products
(22 results)
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[Journal Article] Collisionless shockwaves formedby counter-streaming laser-producedplasmas2011
Author(s)
X Liu, Y T Li, Y Zhang, J Y Zhong, W DZheng, Q L Dong, M Chen, G Zhao, YSakawa, T Morita, Y Kuramitsu, T N Kato, L M Chen, X Lu, J L Ma, W M Wang, Z MSheng, H Takabe, Y-J Rhee, Y K Ding, S EJiang, S Y Liu, J Q Zhu and JZhang
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Journal Title
New Journal of Physics
Volume: 13
Issue: 9
Pages: 8-8
DOI
Related Report
Peer Reviewed
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[Journal Article] Collisionless shockgeneration in high-speedcounter-streaming plasma flows by ahigh-power laser2010
Author(s)
T. Morita, Y. Sakawa, Y. Kuramitsu, S. Dono, H. Aoki, H. Tanji, T. N. Kato, Y. T. Li, Y. Zhang, X. Liu, J. Y. Zhong, H. Takabe, and J. Zhang
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Journal Title
Physics of Plasmas
Volume: 17
Issue: 12
Pages: 15-15
DOI
Related Report
Peer Reviewed
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[Presentation] 宇宙の衝撃波と粒子加速2011
Author(s)
加藤恒彦
Organizer
瀬戸内サマーインスティテュート
Place of Presentation
岡山県青少年教育センター閑谷学校(岡山県備前市)
Year and Date
2011-09-01
Related Report
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