CAJ | 학술논문

本文详细介绍计算电子碰撞激发散射截面的扭曲波玻恩近似（ DWBA）理论模型，并对低能DWBA模型进行修正。利用修正的DWBA模型计算了电子碰撞激发氢原子和氦离子1s－2s和1s－2p的散射微分截面。将关于氢原子由基态到n＝2态的电子碰撞激发散射微分截面与绝对实验测量数据比较，发现二者符合得很好，这验证了我们对DWBA修正的正确性。本文工作为拟合强场诱导的氦原子非序列双电离关联电子动量谱提供了有效的理论方法。
본문상세개소계산전자팽당격발산사절면적뉴곡파파은근사（ DWBA）이론모형，병대저능DWBA모형진행수정。이용수정적DWBA모형계산료전자팽당격발경원자화양리자1s－2s화1s－2p적산사미분절면。장관우경원자유기태도n＝2태적전자팽당격발산사미분절면여절대실험측량수거비교，발현이자부합득흔호，저험증료아문대DWBA수정적정학성。본문공작위의합강장유도적양원자비서렬쌍전리관련전자동량보제공료유효적이론방법。
We present the distorted wave Born approximation ( DWBA ) for electron impact excitation and a method to calibrate the DWBA.With the calibrated DWBA, the differential cross sections ( DCSs) for excitation of H and He +from 1s to 2s and 2p are calculated and the results are compared with the absolute experimental measurements for H at incident energies of 50 eV and 100 eV.It has been found that the theoretical results are in very good agreement with experiment, which confirms the validity of the calibration procedure.This work pre-pares an efficient theoretical method for numerical simulations of non-sequential double ionization of He in strong laser pulse in which laser-induced electron impact excitation of He+is involved.