Local plasma parameter measurements in colliding laser-produced plasmas for studying magnetic reconnection

T. Morita, K. Tomita, K. Sakai, M. Takagi, K. Aihara, M. Edamoto, S. Egashira, T. Higuchi, N. Ishizaka, T. Izumi, S. Kakuchi, T. Kojima, Y. Kuramitsu, S. Matsukiyo, Y. Nakagawa, T. Minami, H. Murakami, Y. Nishioka, M. Ota, T. SanoS. Sei, K. Sugiyama, S. J. Tanaka, R. Yamazaki, Y. Sakawa

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number100754
JournalHigh Energy Density Physics
Volume36
DOIs
Publication statusPublished - Aug 2020

All Science Journal Classification (ASJC) codes

  • Radiation
  • Nuclear and High Energy Physics

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    Morita, T., Tomita, K., Sakai, K., Takagi, M., Aihara, K., Edamoto, M., Egashira, S., Higuchi, T., Ishizaka, N., Izumi, T., Kakuchi, S., Kojima, T., Kuramitsu, Y., Matsukiyo, S., Nakagawa, Y., Minami, T., Murakami, H., Nishioka, Y., Ota, M., ... Sakawa, Y. (2020). Local plasma parameter measurements in colliding laser-produced plasmas for studying magnetic reconnection. High Energy Density Physics, 36, [100754]. https://doi.org/10.1016/j.hedp.2020.100754