Enhancement of longitudinal magnetic field by interaction of heavy ion beams and plasma with strong magnetic field

IF 1.5 4区物理与天体物理 Q3 OPTICS

The European Physical Journal D Pub Date : 2024-10-21 DOI:10.1140/epjd/s10053-024-00922-7

Heng Zhang, Fei-Fei Li, Fang-Ping Wang, Wen-Shan Duan, Sheng Zhang, Liang-Wen Chen

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引用次数: 0

Abstract

The interaction between ion beams and plasma is a fundamental and important physical process, plasma can effectively neutralize the current and charge of ion beam pulses as an ideal medium for its transmission and focusing. The analytical model of short heavy ion beam pulse in cold background plasma under external magnetic field is established. Combined with the experimental parameters, by 2.5D particle-in-cell numerical simulations, the entire transport process of heavy ion beam application strong magnetic fields in plasma is investigated. Our research results indicate that the interaction between short-pulse heavy ion beams and plasma generates a longitudinally induced magnetic field in the same direction as the external magnetic field. Moreover, the electron cyclotron electromagnetic waves of anti-parallel to local magnetic field are excited, and the excitation mechanism is mainly drift instability of electrons beam caused by the heavy ion beam.

Temporal variations of the longitudinal induced magnetic field Bz in plasma and vacuum regions under different external magnetic fields

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重离子束和等离子体与强磁场相互作用增强纵向磁场

离子束与等离子体之间的相互作用是一个基本而重要的物理过程，等离子体能有效中和离子束脉冲的电流和电荷，是其传输和聚焦的理想介质。本文建立了外磁场作用下冷背景等离子体中短重离子束脉冲的分析模型。结合实验参数，通过 2.5D 粒子入胞数值模拟，研究了重离子束在等离子体中应用强磁场的整个传输过程。研究结果表明，短脉冲重离子束与等离子体相互作用会产生与外磁场方向一致的纵向感应磁场。此外，还激发了与局部磁场反平行的电子回旋电磁波，其激发机制主要是重离子束引起的电子束漂移不稳定性。

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来源期刊

The European Physical Journal D 物理-物理：原子、分子和化学物理

CiteScore

3.10

自引率

11.10%

发文量

213

审稿时长

3 months

期刊介绍： The European Physical Journal D (EPJ D) presents new and original research results in: Atomic Physics; Molecular Physics and Chemical Physics; Atomic and Molecular Collisions; Clusters and Nanostructures; Plasma Physics; Laser Cooling and Quantum Gas; Nonlinear Dynamics; Optical Physics; Quantum Optics and Quantum Information; Ultraintense and Ultrashort Laser Fields. The range of topics covered in these areas is extensive, from Molecular Interaction and Reactivity to Spectroscopy and Thermodynamics of Clusters, from Atomic Optics to Bose-Einstein Condensation to Femtochemistry.