激光场中极化势对电子-氦原子散射影响  

The effect of polarization potential on laser-assisted electron-helium scattering

作　　者：王晓飞[1] 胡秋波[2] 李新忠[1] 孙金锋[3] 

机构地区：[1]河南科技大学物理与工程学院,洛阳471003 [2]洛阳理工学院数理部,洛阳471023 [3]洛阳师范学院物理与电子信息学院,洛阳471022

出　　处：《原子与分子物理学报》2012年第5期859-862,共4页Journal of Atomic and Molecular Physics

基　　金：国家自然科学基金(10874064)

摘　　要：构建含有极化势的静电屏蔽势和单纯的静电屏蔽势这两种原子势模型,应用第二玻恩近似(SBA)理论,分别对激光场中电子-氰原子散射截面进行了理论计算.对比实验结果发现含有极化势的静电屏蔽势给出的结果与实验符合较好.表明极化势在激光辅助电子-原子散射中起着重要作用.The absolute differential cross sections of electron-helium scattering in the laser field are calculated using the second Born approximation with the static screen potential including the polarization potential and the single static screen potential. The results of our calculations agree better with the experimental data by the static screen potential including the polarization potential, which show that the polarization potential plays an important role in laser-assisted electron-atom scattering.

关 键 词：极化势 微分截面 激光场 

分 类 号：O562.5[理学—原子与分子物理]