共面不对称条件下He和Ar原子（e, 2e）反应过程中的极化效应和后碰撞相互作用

采用修正后的扭曲波玻恩近似(DWBA)理论，计算了共面不对称几何条件及大能量转移和小动量转移条件下的He(1s²)，Ar(3p⁶)和Ar(2p⁶)(e, 2e)反应三重微分截面.将理论计算结果与实验结果及由Brauner，Briggs和Klar提出的BBK方法、标准的DWBA理论计算结果进行了比较，发现在共面不对称几何条件及大能量转移和小动量转移条件下，极化效应和后碰撞相互作用在He(1s²)，Ar(3p^{6< 关键词： (e;2e)反应 极化效应 后碰撞相互作用 共面不对称几何条件}

Polarization effect and post-collisional interaction in (e, 2e) reaction process for He and Ar in coplanar asymmetric geometry

The (e, 2e) triple differential cross sections for He(1s²)，Ar(3p⁶)and Ar(2p⁶)have been calculated using the modified distorted wave Born approximation (DWBA) in coplanar asymmetric geometry. The kinematics employs large energy transfer and is close to minimum momentum transfer. The theoretical results have been compared with those of the experiment, the Brauner, Briggs and Klar (BBK) method and the standard DWBA calculation. It is shown that the polarization and post-collisional interaction effects are very important in coplanar asymmetric (e, 2e)reaction with special kinematics for He(1s²), Ar(3p⁶) and Ar(2p⁶).