2009 Fiscal Year Final Research Report
Wakefield Acceleration in Relativistic Shock Waves
| Project/Area Number |
19340171
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plasma science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HOSHINO Masahiro The University of Tokyo, 大学院・理学系研究科, 教授 (90241257)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 宇宙・天体プラズマ / 衝撃波 / 粒子加速 / 相対論プラズマ / 宇宙線 |
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| Research Abstract |
We studied wakefield acceleration under large amplitude waves generated in a relativistic shock wave by using a particle-in-cell simulation. It is known that the large-amplitude precursor wave generated by synchrotron maser instability at the shock front can propagate toward the upstream region. We investigated the interaction between the precursor wave and plasmas through ponderomotive force. The wakefield acceleration is known to be a new generation scheme for particle accelerator in laser-laboratory plasma, while in the astroplasma settings, the nature of the precursor wave become more or less turbulent, and we need to understand the wakefield acceleration under incoherent fields. We found that the wakefield acceleration under the incoherent shock upstream waves can be regarded as a high efficient acceleration mechanism by a large-scale, particle-in-cell simulation.
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Research Products
(36 results)
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[Journal Article] Magnetic Field Investigation of Mercury's Magnetosphere and the Inner Heliosphere by MMO/MGF2009
Author(s)
W. Baumjohann, A. Matsuoka, W. Magnes, K. -H. Glassmeier^c, R. Nakamura, H. Biernat, M. Delva, K. Schwingenschuh, T. Zhang, H. -U. Auster, K.-H. Fornacon, U. Motschmann, I. Richter, A. Balogh, C. Carr, M. Dougherty, P. J. Cargill, T. S. Horbury, E. A. Lucek, F. Tohyama, T. Takahashi, M. Tanaka, T. Nagai, H. Tsunakawa, M. Matsushima, M. Shinohara, H. Kawano, A. Yoshikawa, H. Shibuya' T. Nakagawa, M. Hoshino, Y. Tanaka, R. Kataoka, B. J. Anderson, C. T. Russell
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Journal Title
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[Journal Article] Low energy charged particle measurement by MAP-PACE onboard SELENE2008
Author(s)
Y. Saito, S. Yokota, K. Asamura, T. Tanaka, R. Akiba, M. Fujimoto, H. Hasegawa, H. Hayakawa, M. Hirahara, M. Hoshino, S. Machida, T. Mukai, T. Nagai, T. Nagatsuma, M. Nakamura, K. Oyama, E. Sagawa, S. Sasaki, K. Seki, T. Terasawa
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Journal Title
Earth, Planet and Space 60
Pages: 375-385
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[Journal Article] Transient and localized processes in the magnetotail : A revew2008
Author(s)
A. S. Sharma, R. Nakamura, A. Runov, E. E. Grigorenko, H. Hasegawa, M. Hoshino, P. Louarn, C. J. Owen, A. Petrukovich, J. -A. Sauvaud, V. S. Semenov, V. A. Sergeev, J. A. Slavin, B. U. O. Sonnerup, L. M. Zelenyi, G. Fruit, S. Haaland, H. Malova, K. Snekvik
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Journal Title
Annales Geophysicae 26(4)
Pages: 955-1006
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[Journal Article] Dynamics of Thin Current Sheets : Cluster Observations2007
Author(s)
W. Baumjohann, A. Roux, O. Le Contel, R. Nakamura, J. Birn, M. Hoshino, A. T. Y. Lui, C. J. Owen, J. -A. Sauvaud, A. Vaivads, D. Fontaine, A. Rounov
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Journal Title
Annales Geophysicae 21
Pages: 1-25
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