Effects of Landau damping and collision on stimulated Raman scattering with various phase-space distributions

作     者：Shanxiu Xie Yong Chen Junchen Ye Yugu Chen Na Peng Chengzhuo Xiao 谢善秀;陈勇;叶俊辰;陈雨谷;彭娜;肖成卓

作者机构：Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of EducationSchool of Physics and ElectronicsHunan UniversityChangsha 410082China Institute of Applied Physics and Computational MathematicsBeijing 100094China Collaborative Innovation Center of IFSA(CICIFSA)Shanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2022年第31卷第5期

页      面：464-472页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 0704[理学-天文学] 

基　　金：supported by the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDA25050700) the National Natural Science Foundation of China(Grant Nos.11805062,11875091 and 11975059) the Science Challenge Project(Grant No.TZ2016005) the Natural Science Foundation of Hunan Province,China(Grant No.2020JJ5029) 

主　　题：stimulated Raman scattering Landau damping distribution functions 

摘      要：Stimulated Raman scattering(SRS)is one of the main instabilities affecting success of fusion ***,we study the relationship between Raman growth and Landau damping with various distribution functions combining the analytic formulas and Vlasov *** Landau damping obtained by Vlasov-Poisson simulation and Raman growth rate obtained by Vlasov-Maxwell simulation are anti-correlated,which is consistent with our theoretical analysis *** distribution,flattened distribution,and bi-Maxwellian distribution are studied in detail,which represent three typical stages of *** also demonstrate the effects of plateau width,hot-electron fraction,hot-to-cold electron temperature ratio,and collisional damping on the Landau damping and growth *** gives us a deep understanding of SRS and possible ways to mitigate SRS through manipulating distribution functions to a high Landau damping regime.