Molecular dynamics simulation of electron-ion temperature relaxation in dense hydrogen: A scheme of truncated Coulomb potential

被引：13
|
作者：
Ma, Qian [1 ]
Dai, Jiayu [1 ]
Kang, Dongdong [1 ]
Zhao, Zengxiu [1 ]
Yuan, Jianmin [1 ]
Zhao, Xueqing [2 ]
机构：
[1] Natl Univ Def Technol, Coll Sci, Dept Phys, Changsha 410073, Hunan, Peoples R China
[2] Northwest Inst Nucl Technol, Xian 710024, Peoples R China
来源：
HIGH ENERGY DENSITY PHYSICS | 2014年 / 13卷
关键词：
Temperature relaxation; Molecular dynamics; Coulomb logarithm; EQUILIBRATION;
D O I：
10.1016/j.hedp.2014.09.004
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：
Molecular dynamics (MD) simulations are performed to investigate the temperature relaxation between electrons and ions in a fully ionized, dense hydrogen plasma. We used HM (J. P. Hansen and I. R. McDonald) potential and introduced a truncated Coulomb interaction, which can avoid Coulomb catastrophe by choosing an appropriate cutting radius. The calculated results are compared with those from theoretical models (LS, GMS, BPS), whose applicability is also discussed. The effect of the interaction between ions and electrons on the temperature relaxation process is also investigated in the strong collision region. Finally, we discuss the effect of exchange interaction of electrons to the temperature relaxation. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：34 / 39
页数：6
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