Local plasma parameter measurements in colliding laser-produced plasmas for studying magnetic reconnection
| Autor: | Tomihiko Kojima, Yasuhiro Kuramitsu, Takayoshi Sano, Taichi Morita, S. Kakuchi, K Aihara, M. Ota, Yoichi Sakawa, Y Nishioka, S. Sei, Masafumi Edamoto, Shuichi Matsukiyo, N. Ishizaka, M Takagi, Kunio Sakai, S. Egashira, Kentaro Tomita, Ryo Yamazaki, T Izumi, Shuta J. Tanaka, Y. Nakagawa, T. Minami, H. Murakami, K Sugiyama, T Higuchi |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics Electron density Radiation Thomson scattering Magnetic reconnection Electron Plasma 01 natural sciences 010305 fluids & plasmas Ion Physics::Plasma Physics Physics::Space Physics 0103 physical sciences Plasma parameter Electron temperature Atomic physics 010306 general physics |
| Zdroj: | High Energy Density Physics. 36:100754 |
| ISSN: | 1574-1818 |
| Popis: | We have implemented laser Thomson scattering for local plasma measurement of electron and ion temperatures, electron density, flow velocity, and charge state. The electron density increases by two times in the interaction of two plasma flows, indicating collisionless interaction. The density and velocity show fluctuations only at t = 40 ns, and the density suddenly decreases, indicating the plasma ejection from the interaction region, which can be explained by a magnetic reconnection. The electron temperature in the double-flow is larger than that in the single flow. This may be explained by the energy transfer from the plasma kinetic energy to thermal energy. The ion temperature is much larger than electron temperature in the double-flow, and this may be explained by collisional effects between two plasmas, and/or possibly interpreted as a thermalization due to magnetic reconnection. |
| Databáze: | OpenAIRE |
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