Electron-proton relaxation in hot-dense plasmas with a screened quantum statistical potential

IF 2.4 3区 物理与天体物理 Q1 Mathematics
Zhengfeng Fan, Chengxin Yu, Cong-Zhang Gao, Xuefeng Xu, Cunbo Zhang, Binbing Wu, Jie Liu, Pei Wang, Shaoping Zhu
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引用次数: 0

Abstract

Modeling the nonequilibrium process between ions and electrons is of great importance in laboratory fusion ignition, laser-plasma interaction, and astrophysics. For hot and dense plasmas, theoretical descriptions of Coulomb collisions remain complicated due to quantum effect at short distances and screening effect at long distances. In this paper, we propose an analytical screened quantum statistical potential that takes into account both the short-range quantum diffraction effect and the long-range screening effect. By implementing the newly developed potential into the binary scattering framework, the electron-proton temperature relaxation in hot-dense hydrogen plasmas is investigated. In both the classical and quantum limits, analytical expressions for the Coulomb logarithm have been obtained, which are generally embedded in an asymptotic matching formula. Quantitative comparisons with molecular dynamics simulations and recent OMEGA experiments demonstrate that the present modeling is well suited to describe the temperature relaxation process between electrons and ions in hot-dense plasmas.

Abstract Image

具有屏蔽量子统计势的热密集等离子体中的电子-质子弛豫
离子和电子之间的非平衡过程建模在实验室核聚变点火、激光等离子体相互作用和天体物理学中具有重要意义。对于热等离子体和高密度等离子体,由于短距离的量子效应和长距离的屏蔽效应,库仑碰撞的理论描述仍然很复杂。在本文中,我们提出了一种分析性屏蔽量子统计势,它同时考虑了短程量子衍射效应和长程屏蔽效应。通过将新开发的势引入二元散射框架,研究了热致密氢等离子体中的电子-质子温度弛豫。在经典和量子极限中,都得到了库仑对数的分析表达式,这些表达式一般都嵌入了渐近匹配公式。与分子动力学模拟和最近的 OMEGA 实验进行的定量比较表明,目前的模型非常适合描述热密集等离子体中电子和离子之间的温度弛豫过程。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Physical review. E
Physical review. E 物理-物理:流体与等离子体
CiteScore
4.60
自引率
16.70%
发文量
0
审稿时长
3.3 months
期刊介绍: Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.
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