中文摘要：

利用修改后的MBELL模型,研究K壳层的相对论效应和离子效应对快电子离子碰撞电离K壳层产生截面的影响;在BELL模型中,引入相对论效应和离子效应,基于相对论效应的K壳层电子离子碰撞电离截面的理论,计算Ca,Ti,Cu,Ge,Mo和Ag的K壳层电子碰撞电离截面。研究结果表明：考虑到相对论效应和离子效应后,修改后的MBELL的K壳层产生截面的结果明显优于BELL的计算结果和其他半经验公式的计算结果,其计算结果可用来模拟K壳层激光等离子体的超热电子能谱和产额,且可为一些电子仪器的制造提供精确的碰撞电离参数。

英文摘要：

The effects of ionic and relativistic of K-shell on ionization production cross sections were studied using modified MBELL model.The total K-shell ionization production cross sections of Ca,Ti,Cu,Ge,Mo and Ag atoms by electron impact were calculated using a modified version of the BELL formula by incorporating both ionic and relativistic corrections in it.The results show that the proposed modified BELL model with can provide an excellent description of the experimental data.The calculated results can be used to simulate the hot electron energy spectrum and laser plasma yields and provide accurate parameters for electron devices.