Interaction of parametric instabilities from 3ω and 2ω lasers in large-scale inhomogeneous plasmas

被引：16
作者：
Feng, Q. S. [1 ]
Liu, Z. J. [1 ,2 ]
Cao, L. H. [1 ,2 ,3 ]
Xiao, C. Z. [3 ,4 ]
Hao, L. [1 ]
Zheng, C. Y. [1 ,2 ,3 ]
Ning, C. [1 ]
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
[4] Hunan Univ, Sch Phys & Elect, Changsha 410082, Peoples R China
来源：
NUCLEAR FUSION | 2020年 / 60卷 / 06期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
stimulated Brillouin scattering; stimulated Raman scattering; laser-plasma interaction; inertial confinement fusion; parametric instability; STIMULATED RAMAN-SCATTERING; INERTIAL CONFINEMENT FUSION; FACILITY TARGETS DRIVEN; ION-ACOUSTIC-WAVES; BRILLOUIN-SCATTERING; PHYSICS BASIS; IGNITION; SATURATION; SIMULATIONS; TEMPERATURE;
D O I：
10.1088/1741-4326/ab7f14
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：
The mechanism of energy transfer from 3 omega pump light to stimulated Brillouin scattering (SBS) generated by 2 omega pump light is proposed. The backscattering light of stimulated Raman scattering (SRS) generated by 3 omega pump light can work as a seed of the SBS of 2 omega pump light, which results in the increase of the latter. Adding 2 omega pump light into 3 omega pump light will decrease the reflectivity of SBS generated from 3 omega pump light. The total reflectivity will first decrease and then increase with an increase of the ratio of 2 omega light intensity to the intensity of 2 omega and 3 omega lights f=I2 omega 0/(I2 omega 0+I3 omega 0)<i, and will be controlled in a lower level when this ratio f is about 10%-20%. These results give a method to control the total reflectivity of SBS and SRS in inertial confinement fusion (ICF) by adding 2 omega light into 3 omega light.
引用
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页数：15
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