Onset of stimulated Raman scattering of a laser in a plasma in the presence of hot drifting electrons

被引：21

作者：

Gupta, D. N. ^{[1
]}

Yadav, Pinki ^{[1
]}

Jang, D. G. ^{[2
]}

Hur, M. S. ^{[3
]}

Suk, H. ^{[2
]}

Avinash, K. ^{[1
]}

机构：

[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

[2] Gwangju Inst Sci & Technol, Dept Phys & Photon Sci, Gwangju 500712, South Korea

[3] Ulsan Natl Inst Sci & Technol, Sch Nat Sci, Ulsan 689798, South Korea

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

INSTABILITY; BEAMS; ACCELERATION; GENERATION; TRANSPORT; TARGETS;

D O I：

10.1063/1.4919626

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Stimulated Raman scattering of a laser in plasmas with energetic drifting electrons was investigated by analyzing the growth of interacting waves during the Raman scattering process. The Langmuir wave and scattered electromagnetic sideband wave grow initially and are dampened after attaining a maximum level that indicates a periodic exchange of energy between the pump wave and the daughter waves. The presence of energetic drifting electrons in the laser-produced plasma influences the stimulated Raman scattering process. The plasma wave generated by Raman scattering may be influenced by the energetic electrons, which enhance the growth rate of the instability. Our results show that the presence of energetic (hot) drifting electrons in a plasma has an important effect on the evolution of the interacting waves. This phenomenon is modeled via two-dimensional particle-in-cell simulations of the propagation and interaction of the laser under Raman instability. (C) 2015 AIP Publishing LLC.

引用

页数：7

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