通过比较Ar在低碰撞能量下的(e,3e)双电离实验结果和基于包含一次作用机制SO和TS1的一阶波恩近似的理论计算结果, 表明在动量转移方向上对称性的破坏显示非一次效应(例如二型两步作用机制)起非常重要的作用.
Through comparing the Ar (e,3e) double ionization experimental results at low collision energy with the theoretical calculation based on the first Born approximation which include the first order mechanisms SO and TS1, the symmetry breaking about the direction of the momentum transfer shows that the non-first order effects (such as two-step 2 mechanism) play an important role.
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