标题： 电子对等离子体丝状不稳定性中的粒子加速和辐射阻尼效应 显示英文标题

标题： Particle acceleration and radiation friction effects in the filamentation instability of pair plasmas

摘要： 研究了由两个逆流的电子-正电子等离子体产生的细丝不稳定性的演化，使用了单维（1D）和二维（2D）空间下的粒子模拟（PIC）。 考虑了辐射摩擦效应对粒子的影响。 在磁场和电流密度经历指数增长后，进入了一个非线性准稳态阶段，该阶段以相反电流的细丝为特征。 在非线性阶段，粒子能量谱发生了强烈的展宽，并伴随着形成一个位于其初始能量两倍处的峰值。 提出了峰值形成的简单理论。 辐射损失的存在不影响不稳定的动力学，但影响粒子能谱的结构。 显示英文摘要

摘要： The evolution of the filamentation instability produced by two counter-streaming pair plasmas is studied with particle-in-cell (PIC) simulations in both one (1D) and two (2D) spatial dimensions. Radiation friction effects on particles are taken into account. After an exponential growth of both the magnetic field and the current density, a nonlinear quasi-stationary phase sets up characterized by filaments of opposite currents. During the nonlinear stage, a strong broadening of the particle energy spectrum occurs accompanied by the formation of a peak at twice their initial energy. A simple theory of the peak formation is presented. The presence of radiative losses does not change the dynamics of the instability but affects the structure of the particle spectra.