原子与分子物理学报2017，Vol.34Issue(5)：891-898,8.DOI:10.3969/j.issn.1000-0364.2017.05.015
1KeV电子入射单电离氦原子三重微分散射截面的理论研究
A theoretical study on the triple differential cross section for electron impact ionization of helium at incident energy of 1 KeV
摘要
Abstract
Under the condition of 1KeV incident energy, by making use of 3C model and DS3C model, the triple differential cross sections of electron-impact single ionization of the ground state of helium are calculated. The results are compared with those of corresponding experiments to systematically make a research on the influence of various screening effects on the triple differential cross section in the scattering plane and the perpendicular plane. The change tendency of triple differential cross section is analysed. It is shown that the influences of final channel screening effect and distorting effect on the triple differential cross sections in the scattering plane can be ignored. The influence of these effects on the triple differential cross sections in the perpendicular plane is stron-ger. In addition, the contributions of interreaction between outgoing electrons and nucleus to the change tendency of differential cross sections in the scattering plane and perpendicular plane are stronger.关键词
三重微分散射截面/屏蔽效应/散射平面/垂直平面Key words
Triple differential cross section/Screening effects/Scattering plane/Perpendicular plane分类
数理科学引用本文复制引用
杨欢,邢玲玲,张穗萌,吴兴举,赵敏福,刘向远..1KeV电子入射单电离氦原子三重微分散射截面的理论研究[J].原子与分子物理学报,2017,34(5):891-898,8.基金项目
安徽省高等学校省级自然科学研究重点项目(KJ2016A749) （KJ2016A749）
安徽省教育厅自然科学研究重点项目(KJ2012A275) （KJ2012A275）
安徽省教育厅自然科学研究重点项目(KJ2013A260) （KJ2013A260）
安徽省教育厅自然科学研究重点项目(KJ2017A406) （KJ2017A406）
安徽省高等学校省级自然科学研究重点项目(KJ2017A401) （KJ2017A401）
