Effects of relativistic electron temperature on parametric instabilities for intense laser propagation in underdense plasma

Yao Zhao, Jun Zheng, Min Chen, Lu Le Yu, Su Ming Weng, Chuang Ren, Chuan Sheng Liu, Zheng-Ming Sheng

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Abstract

Effects of relativistic electron temperature on stimulated Raman scattering and stimulated Brillouin scattering instabilities for high intensity lasers propagating in underdense plasma are studied theoretically and numerically. The dispersion relations for these instabilities are derived from the relativistic fluid equation. For a wide range of laser intensity and electron temperature, it is found that the maximum growth rate and the instability region in k-space can be reduced at relativistic electron temperature. Particle-in-cell simulations are carried out, which confirm the theoretical analysis.

Original languageEnglish
Article number112114
Number of pages8
JournalPhysics of Plasmas
Volume21
Issue number11
Early online date21 Nov 2014
DOIs
Publication statusPublished - Nov 2014

Keywords

  • plasma temperature
  • plasma instabilities
  • electron temperature
  • laser propagation

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