离子极化势对钙原子共面对称(e,2e)反应影响的数值研究

本文使用扭曲波波恩近似方法(DWBA)研究了共面对称条件下钙原子的电子碰撞电离反应( (e,2e)反应 )，在DWBA理论的基础上，考虑了原子极化势和离子极化势对三重微分散射截面的影响。采用发展的DWBA方法，我们研究了出射电子能量从6.75eV到29.25eV范围内电子与钙原子的碰撞电离过程，计算了电离三重微分截面。通过与已有理论和实验数据进行比较发现，离子极化势对钙原子的共面对称(e,2e)反应散射微分截面有较大的影响，很好的描述了碰撞电离微分截面的结构效应，特别是在散射角度较小时(≦60o)，本文计算结果与实验测量非常一致。

Ion polarization effect in (e, 2e) reaction process for Ca in coplanar symmetric geometry

We have reported the calculations of triple differential cross section (TDCS) for electron impact single ionization (i.e.(e, 2e) processes) of Ca in coplanar symmetric geometry . The energies of two outgoing electrons are equal and form 6.75eV to 29.25eV. We have considered the effect of the target polarization and residual ion polarization in the present DWBA calculation. Reasonable improvement can be found, when comparing the present results with previous experimental measurements and theoretical calculations