Ion Velocity and Energy Distribution Functions Perturbed by the Ion-Acoustic Solitons: Analytical Calculation for Arbitrary Amplitudes

IF 0.9 4区物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS

Plasma Physics Reports Pub Date : 2025-04-17 DOI:10.1134/S1063780X24602050

F. M. Trukhachev, M. M. Vasiliev, O. F. Petrov

引用次数: 0

Abstract

Distribution functions of background ions perturbed by the ion-acoustic solitons are calculated using the Sagdeev pseudopotential approach for the case of cold ions. Velocity and kinetic-energy distribution functions are analyzed. Explicit expressions valid for the solitons of arbitrary amplitude are obtained. It is demonstrated that the solitons form a strongly nonequilibrium plasma in their vicinity. The results are compared with previous analytical calculations and results of simulations.

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受离子声孤子扰动的离子速度和能量分布函数：任意振幅的解析计算

在冷离子的情况下，利用Sagdeev伪势方法计算了受离子声孤子扰动的背景离子的分布函数。分析了速度分布函数和动能分布函数。得到了对任意振幅孤子有效的显式表达式。证明了孤子在其附近形成强非平衡等离子体。结果与以往的分析计算和仿真结果进行了比较。

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

Plasma Physics Reports 物理-物理：流体与等离子体

CiteScore

1.90

自引率

36.40%

发文量

104

审稿时长

4-8 weeks

期刊介绍： Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.