Collective Thomson scattering in non-equilibrium laser produced two-stream plasmas

K. Sakai, S. Isayama, N. Bolouki, M. S. Habibi, Y. L. Liu, Y. H. Hsieh, H. H. Chu, J. Wang, S. H. Chen, T. Morita, K. Tomita, R. Yamazaki, Y. Sakawa, S. Matsukiyo, Y. Kuramitsu

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate collective Thomson scattering (CTS) in two-stream non-equilibrium plasmas analytically, numerically, and experimentally. In laboratory astrophysics, CTS is a unique tool to obtain local plasma diagnostics. While the standard CTS theory assumes plasmas to be linear, stationary, isotropic, and equilibrium, they are often nonlinear, non-stationary, anisotropic, and non-equilibrium in high energy phenomena relevant to laboratory astrophysics. We theoretically calculate and numerically simulate the CTS spectra in two-stream plasmas as a typical example of a non-equilibrium system in space and astrophysical plasmas. The simulation results show the feasibility to diagnose two-stream instability directly via CTS measurements. To confirm the non-equilibrium CTS analysis, we have developed an experimental system with a high repetition rate tabletop laser for laboratory astrophysics.

Original languageEnglish
Article number103104
JournalPhysics of Plasmas
Volume27
Issue number10
DOIs
Publication statusPublished - Oct 1 2020

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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