Burst behavior due to the quasimode excited by stimulated Brillouin scattering in high-intensity laser-plasma interactions

被引：4
|
作者：
Feng, Q. S. [1 ]
Cao, L. H. [1 ,2 ,3 ]
Liu, Z. J. [1 ,2 ]
Zheng, C. Y. [1 ,2 ,3 ]
He, X. T. [1 ,2 ,3 ]
机构：
[1] Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China
[2] Peking Univ, Ctr Appl Phys & Technol, HEDPS, Beijing 100871, Peoples R China
[3] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Shanghai 200240, Peoples R China
来源：
HIGH POWER LASER SCIENCE AND ENGINEERING | 2019年 / 7卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Brillouin amplification; inertial confinement fusion; ion-acoustic waves; quasimode; stimulated Brillouin scattering; ELECTROMAGNETIC-WAVES; SIMULATIONS; COMPRESSION; SATURATION;
D O I：
10.1017/hpl.2019.44
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The strong-coupling mode, called the "quasimode", is excited by stimulated Brillouin scattering (SBS) in high-intensity laser-plasma interactions. Also SBS of the quasimode competes with SBS of the fast mode (or slow mode) in multiion species plasmas, thus leading to a low-frequency burst behavior of SBS reflectivity. Competition between the quasimode and the ion-acoustic wave (IAW) is an important saturation mechanism of SBS in high-intensity laser-plasma interactions. These results give a clear explanation of the low-frequency periodic burst behavior of SBS and should be considered as a saturation mechanism of SBS in high-intensity laser-plasma interactions.
引用
收藏
页数：7
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