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为了研究超强激光与相对论电子束相互作用中的正负电子对产生等量子电动力学效应,用二维粒子模拟方法对相互作用中产生的光子和正电子的空间分布和能谱进行了数值模拟研究。探讨圆偏振和线偏振激光条件下光子和正电子密度和能量分布的变化情况。结果表明,圆偏振激光条件下可以产生更多能量更高的光子和正电子。
In order to study the equivalent quantum electrodynamics effect of the positive and negative electron pairs in the interaction between the superlaser laser and the relativistic electron beam, the numerical simulation of the spatial distribution and energy spectra of the photons and positrons generated by the interaction was carried out by two-dimensional particle simulation . The changes of density and energy distribution of photons and positrons under the conditions of circularly polarized light and linearly polarized laser light were investigated. The results show that under the condition of circularly polarized laser, more energetic photons and positrons can be generated.