皖西学院学报
皖西學院學報
환서학원학보
JOURNAL OF WANXI UNIVERSITY
2012年
2期
100-102
,共3页
(e,2e)反应%扭曲波玻恩近似%极化%后碰撞作用
(e,2e)反應%扭麯波玻恩近似%極化%後踫撞作用
(e,2e)반응%뉴곡파파은근사%겁화%후팽당작용
(e%2e) reaction%Distorted Wave Born Approximation%polarization%post-collisional interaction
用包含后碰撞作用和极化效应的扭曲波玻恩近似理论计算了共面不对称几何条件下入射电子能量为50eV时He原子的低能（e,2e）反应的三重微分截面,并同实验测量结果进行了比较。指出后碰撞作用和极化效应在共面不对称几何条件下He原子的低能（e,2e）过程中均起着重要的作用。
用包含後踫撞作用和極化效應的扭麯波玻恩近似理論計算瞭共麵不對稱幾何條件下入射電子能量為50eV時He原子的低能（e,2e）反應的三重微分截麵,併同實驗測量結果進行瞭比較。指齣後踫撞作用和極化效應在共麵不對稱幾何條件下He原子的低能（e,2e）過程中均起著重要的作用。
용포함후팽당작용화겁화효응적뉴곡파파은근사이론계산료공면불대칭궤하조건하입사전자능량위50eV시He원자적저능（e,2e）반응적삼중미분절면,병동실험측량결과진행료비교。지출후팽당작용화겁화효응재공면불대칭궤하조건하He원자적저능（e,2e）과정중균기착중요적작용。
The Distorted Wave Born Approximation was modified with polarization and post-collisional interaction,which has been used to calculate the triple differential cross sections for electron impact ionization of helium in coplanar asymmetric geometry at incident energy of 50eV.The calculated results are compared with available experimental data.It is noted that the post-collisional interaction and polarization effect play an important role in the low-energy（e,2e） processes of He in coplanar asymmetric geometry.
