氦同位素与氢分子碰撞的振转激发分波截面研究  

Theoretical study on the partial wave cross sections of vibrational and rotational excitation for the collisions of He isotope with H_2

作　　者：王晓璐[1,2] 徐梅[2] 令狐荣锋[1,2] 孙克斌[1] 杨向东[1] 

机构地区：[1]四川大学原子与分子物理研究所,成都610065 [2]贵州师范大学物理与电子科学学院,贵阳550001

出　　处：《物理学报》2010年第3期1689-1694,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10974139;10964002;60971078);高等学校博士点专项科研基金(批准号:20050610010);贵州省教育厅自然科学重点基金(批准号:2005105);贵州省优秀科技教育人才省长专项基金(批准号:黔省专合字(2006)113号);贵州师范大学青年教师科研基金(批准号:校科青2007-1-01)资助的课题~~

摘　　要：用密耦近似方法和Tang-Toennies势模型计算了E=0·7eV时,氦原子的四种同位素3He,4He,9He,10He与氢分子H2碰撞体系的振转激发分波截面.通过分析各碰撞体系分波截面的差异,探讨了He(3He,4He,9He,10He)-H2碰撞体系的弹性碰撞、纯转动激发和振转激发情况下,其分波截面随量子数和体系约化质量的变化规律.In this paper, the close-coupling method and the Tang-Toennies potential are applied to the collisions of ~3He,~4He,~9He and ~10He with H_2 systems when the incident energy is 0.7 eV. The vibrational and rotational excitation cross sections are calculated. By analyzing the partial wave cross sections, the changing tendencies of the partial wave cross sections with the quantum number and reduced mass in the isotopic substitution systems are obtained.

关 键 词：振转激发 分波截面 同位素替代 

分 类 号：O562.5[理学—原子与分子物理]