The ion acoustic instability during collisionless two-ion-species plasma expansion

被引：0
|
作者：
Lv, S. Y. [1 ]
Wang, Qing [1 ]
Liu, D. J. [1 ]
Li, X. X. [1 ]
Cheng, R. J. [1 ]
Huang, Z. M. [1 ]
Li, X. M. [1 ]
Zhang, S. T. [2 ]
Chen, Z. J. [2 ]
Wang, Qiang [1 ]
Liu, Z. J. [1 ,2 ]
Cao, L. H. [1 ,2 ]
Zheng, C. Y. [1 ,2 ]
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
来源：
PHYSICS OF PLASMAS | 2023年 / 30卷 / 09期
基金：
中国国家自然科学基金;
关键词：
LASER; BACKSCATTER;
D O I：
10.1063/5.0155674
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：
A hypothesis of the electrostatic field for the expansion of a plasma composed of two ion species into a vacuum is proposed. The solution for expansion is derived analytically and verified by numerical simulations. The expansion region is predicted to exhibit a constant velocity difference between the two ion components, which could result in ion beam instability and, thus, an increase in ion temperature. The instability, which occurs in CH plasma, is also verified theoretically and examined by particle-in-cell simulations.
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页数：10
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