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

页数：7

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