相对论等离子体电流丝状不稳定性中光子辐射功率随光束参数的非线性缩放

IF 2 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Physics of Plasmas Pub Date : 2024-08-02 DOI:10.1063/5.0210348

Zhang-Hu Hu, Wen-Yuan Zhai, Jie-Jie Lan, You-Nian Wang

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引用次数: 0

摘要

我们在这项工作中研究了相对论电子束在等离子体电流丝状不稳定性诱导的磁场中的光子辐射。我们提出了一个分析模型，并证明辐射功率仅取决于电子束密度、电荷和能量。在不稳定性的线性阶段，由于束丝合并，束-等离子体系统中的辐射功率显著增加，而在非线性阶段则趋于饱和。我们进行了详细的电磁粒子池内模拟，发现辐射功率与束流参数的非线性比例关系与分析模型十分吻合。

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Nonlinear scaling of photon radiation power in relativistic plasma current filamentation instability with beam parameters

We investigate in this work the photon radiation of relativistic electron beams in the magnetic fields induced by plasma current filamentation instability. An analytical model is proposed, and the radiated power is shown to depend only on the beam density, charge, and energy. The radiated power in the beam–plasma system increases significantly in the linear stage of the instability due to beam filament merger and becomes saturated in the nonlinear stage. Detailed electromagnetic particle-in-cell simulations are performed and the nonlinear scalings of the radiated power with beam parameters are found, showing good agreement with the analytical model.

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来源期刊

Physics of Plasmas 物理-物理：流体与等离子体

CiteScore

4.10

自引率

22.70%

发文量

653

审稿时长

2.5 months

期刊介绍： Physics of Plasmas (PoP), published by AIP Publishing in cooperation with the APS Division of Plasma Physics, is committed to the publication of original research in all areas of experimental and theoretical plasma physics. PoP publishes comprehensive and in-depth review manuscripts covering important areas of study and Special Topics highlighting new and cutting-edge developments in plasma physics. Every year a special issue publishes the invited and review papers from the most recent meeting of the APS Division of Plasma Physics. PoP covers a broad range of important research in this dynamic field, including: -Basic plasma phenomena, waves, instabilities -Nonlinear phenomena, turbulence, transport -Magnetically confined plasmas, heating, confinement -Inertially confined plasmas, high-energy density plasma science, warm dense matter -Ionospheric, solar-system, and astrophysical plasmas -Lasers, particle beams, accelerators, radiation generation -Radiation emission, absorption, and transport -Low-temperature plasmas, plasma applications, plasma sources, sheaths -Dusty plasmas