We consider the effect of ion mobility on the threshold of relativistic self-induced transparency under irradiation of thin plasma layers by circularly polarised laser radiation. An analytical model of the motion of ions during the removal of electrons from the layer surface by the ponderomotive force of laser radiation is constructed. The model is used to analyse the motion of probe electrons in the resulting electromagnetic field. It is shown that the higher the ion mobility and the longer the laser pulse, the more stable the plasma layer to longitudinal perturbations of a finite value and the higher the threshold of self-induced transparency. These conclusions are verified by one-dimensional numerical simulation of a complete system of kinetic equations for plasma and Maxwell's equations.

中文翻译：

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有限离子质量对具有尖锐边界的等离子体层的相对论自感应透明性的影响

我们考虑了圆极化激光辐射在薄等离子体层辐照下，离子迁移率对相对论自感应透明性阈值的影响。建立了通过激光辐射的动能从层表面去除电子过程中离子运动的解析模型。该模型用于分析探针电子在产生的电磁场中的运动。结果表明，离子迁移率越高，激光脉冲越长，等离子体层对有限值的纵向扰动越稳定，并且自感应透明度的阈值越高。这些结论通过一整套完整的等离子体动力学方程和麦克斯韦方程组的一维数值模拟得到了验证。