摘要
对作者所在实验室最近完成的Ｈｅ原子电子动量谱学实验结果进行了详细的理论分析。在平面波冲量近似和扭曲波冲量近似下，利用三类典型的Ｈｅ原子基态波函数，对Ｗｅｉｇｏｌｄ几何条件下的（ｅ，２ｅ）反应的三重微分截面进行了计算，并与实验结果作了详细的比较，结果表明：１）电子动量谱学是直接获取电子波函数信息的有用方法；２）平面波冲量近似和扭曲波冲量近似得到的电子动量谱形状的差别并不大。
A detailed theoretical analysis is reported for the recent experimental resultS of electron momentum spectroscopy of Helium in our laboratory.Within plane wave impulse approximation (PWLA) and distorted wave impulse opproximation(DWIA) and using three kinds of ground state wave functions of Helium, the triple differential cross sections of (e, 2e) reactions under Weigold geometric conditions have been calculated. The results are compared with our experimental data in detail. It is shown that the election momentum spectroscopy is an useful method for obtaining wave function informations of atomic electrons and the electron momentum profiles obtained by PWIA and DWIA are almost the same.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
1994年第4期369-375,共7页
Journal of Atomic and Molecular Physics
基金
国家科委
国家自然科学基金
关键词
氦原子
电子动量谱学
反应
电子波函数
Helium atom
Electron momentum spectroscopy
(e,2e) reaction
