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

Journal Article · Sat Nov 15 04:00:00 EST 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4902517· OSTI ID:22403254

Zhao, Yao; Zheng, Jun; Chen, Min; Yu, Lu-Le; Weng, Su-Ming ^[1]; Ren, Chuang ^[2]; Liu, Chuan-Sheng ^[3]; Sheng, Zheng-Ming ^[1]

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1. Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
2. Department of Mechanical Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627 (United States)
3. East-West Space Science Center, University of Maryland, College Park, Maryland 20742 (United States)

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.

• OSTI ID: 22403254
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 21; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BRILLOUIN EFFECT
DISPERSION RELATIONS
ELECTRON TEMPERATURE
LASERS
PARAMETRIC INSTABILITIES
PLASMA
RAMAN EFFECT
RELATIVISTIC RANGE