Ne原子与H_2、D_2、T_2分子碰撞微分散射截面的研究  

A study on the differential cross sections of Ne-H_2(D_2,T_2)collision

作　　者：令狐荣锋[1,2] 徐梅[1] 李劲[2,3] 吕兵[1,2] 王晓璐[1,2] 

机构地区：[1]贵州师范大学物理与电子科学学院,贵阳550001 [2]四川大学原子与分子物理研究所,成都610065 [3]海南大学材料与化工学院,海口570228

出　　处：《四川大学学报（自然科学版）》2010年第3期572-578,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(10974139;10964002);贵州省教育厅自然科学重点项目(2005105);贵州省优秀科技教育人才省长基金(黔省专合字(2006)113号);贵州省科学技术基金(黔科合J字[2009]2066号)

摘　　要：本文使用Hariharan计算的短程自洽场排斥势数据,拟合了Tang-Toennies势模型中排斥势参数,用该模型和密耦近似(Close-Coupling)方法计算了惰性气体原子Ne与H_2、D_2、T_2分子在碰撞能量为83.8 meV时的微分散射截面,并与实验值和文献值进行了比较.本文计算的微分散射截面值与实验值和文献值均符合得较好.使用同样的方法,本文还计算了碰撞能量在95 meV、155 meV时Ne-H_2、Ne-D_2、Ne-T_2三个体系的微分截面,得出了三个体系的微分散射截面随碰撞能量的变化规律.In this paper, Hariharan＇s data of the short range repulsive potential has been fitted to Tang- Toennies potential model. With the model and the close-coupling approximation method, the differential cross sections of Ne-- H2 （D2, T2） collisions have been calculated at the incident energy of 83. 8 meV. The calculated differential cross sections are in good agreement with the experimental data and with the published paper. With the same method and potential model, the differential cross sections of Ne--H2 （D2, T2） collisions have been derived and analyzed at the incidental energies of 95 meV and 155 meV. The rule of differential cross sections vary with the incidental energies has been obtained.

关 键 词：Ne—H2 Ne—D2 Ne—T2 Tang—Toennies势模型 密耦方法 微分截面 

分 类 号：O561[理学—原子与分子物理]