Ca原子4s2-4s4p电子碰撞激发特性
Theoretical study on Electron Impact Excitation of Calcium

基于全相对论扭曲波（RDW）电子碰撞激发计算程序REIE06，系统计算了Ca原子基态3p64s2 1S0到激发态3p64s4p 3P0,1,2 1P1精细结构能级的碰撞截面，总结了在不同入射电子能量下碰撞截面的变化规律。目前计算中，细致考虑了电子关联效应和Breit相互作用，计算结果与已有的理论计算进行比较，对实验值的相对误差较小。
The electron impact excitation (EIE) cross sections of Ca atom form the ground state 3p64s2 1S0 to all of excited states 3p64s4p 3P0,1,2 1P1 are calculated systematically by using the fully relativistic distorted-wave program REIE06. The EIE cross sections versus different energies of incident electron are studied, and some important conclusions are summarized. Because of the electron correlation effects and Breit interaction are considered in detail, the present results are compared with the existing theoretical results, and the relative error of the experimental values is relatively small.