Xe(4d~(10))(e,2e)反应三重微分截面的理论研究

采用修正后的扭曲波玻恩近似理论,计算了共面不对称几何条件下Xe(4d~(10))(e,2e)反应的三重微分截面.散射电子能量为1000 eV,敲出电子能量为20 eV,散射电子角度分别固定在2°,4°和7.5°.理论计算与Avaldi等人的实验结果和扭曲波玻恩近似理论计算进行了比较,发现出射电子之间的后碰撞相互作用较弱,极化效应在反应过程中起着重要作用.

Theoretical calculation of triple differential cross sections of(e,2e) for Xe 4d

The(e,2e) triple differential cross sections of the 4d orbitals of Xe have been calculated using the modified distorted wave Born approximation in coplanar asymmetric geometry.The energy of scattered electron is 1000 eV,and the energy of ejected electron is 20 eV.The scattered electron is selected at 2°,4°and 7.5°.Our theoretical calculations have been compared with experimental and theoretical results of Avaldi et al.It is show that the post-collision interaction between two outgoing electrons is weak,and polarization effect is very important in(e,2e)reaction.