利用微扰理论对多模激光场中电子-原子散射进行了初步研究. 在激光场的极化方向平行于入射电子方向这种特殊的散射模式下, 计算得到了电子-原子微分散射截面与激光场的相移、交换光子数之间的关系. 结论和其它相关理论是一致的.
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