激光场中电子被氩原子散射的微分截面研究  

Differential Cross Sections for Electrons Scattered by Ar Atom in the Laser Field

作　　者：朱遵略[1] 赵晔[2] 刘玉芳[2] 孙金锋[2] 

机构地区：[1]四川大学原子分子研究所,四川成都610065 [2]河南师范大学物理与信息工程学院,河南新乡453007

出　　处：《中国激光》2005年第6期779-781,共3页Chinese Journal of Lasers

基　　金：国家自然科学基金(10174019);河南师范大学骨干教师基金([2003]01)资助项目。

摘　　要：应用第二玻恩近似理论,在电子入射方向平行于激光场的极化方向这种特殊的散射模式下,利用光学型对激光场中电子氩原子散射进行了研究。利用静电屏蔽势,分别应用低频近似和第二玻恩近似公式对激中电子氩原子散射进行了计算。和实验相比较,第二玻恩近似方法给出了较好的结果;应用这个较好的理论用光学势模型进行了计算,得到了更好的结论。The absolute differential cross sections of e-Ar scattering in the laser are calculated employing the second Born approximation with optical potential model in special scattering geometry that the incident electron beam is parallel to the polarization direction of laser field. In order to test these results, the differential cross sections of e-Ar scattering are calculated with the static screen potential by the second Born approximation and low-frequency formula, respectively. The second Born approximation obtains better results compared with the experimental data. The absolute differential cross sections of e-Ar scattering are calculated employing the second Born approximation with optical potential model and the best results are obtained.

关 键 词：非线性光学 光学势模型 第二玻恩近似 微分散射截面 激光场 

分 类 号：O436.2[机械工程—光学工程]