惰性气体原子与氢的同位素分子D_2碰撞分波截面理论研究  

A Theoretical Study of the Partial Wave Cross Section for The Different Energy Inertia Atom and D_2 Collisions

作　　者：邓学儒[1] 蒋德琼[2] 杨向东[3] 

机构地区：[1]西华大学应用物理研究所,成都610039 [2]四川师范大学物理系,成都610066 [3]四川大学原子与分子物理所,成都610065

出　　处：《四川大学学报（自然科学版）》2005年第5期1005-1010,共6页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(10274055);四川省教育厅重点科研基金

摘　　要：用T.T(Tang-Toennies)势模型和密耦计算方法分别计算了入射原子的相对碰撞能量E=0.05eV,0.15eV,0.25eV时He,Ne,Ar,Kr,Xe-D2碰撞体系的00-00弹性碰撞和00-02非弹性碰撞分波截面,得到了惰性气体原子与D2分子碰撞分波截面随量子数增加和体系相对碰撞能量增加的变化规律.结果表明:对00-00弹性碰撞,分波截面随量子数J的增加不断振荡,并出现一些尾部效应;而随入射原子的相对碰撞能量的变化,振荡极大值位置、收敛分波数均不断变化.By using close-coupling equation and Tang-Toennies potential for He,Ne,Ar,Kr,Xe-D2 system,the partial wave cross sections of 00-00 elastic collision and 00-02 unelastic collision at collision energy E=0.05,0.15 and 0.25eV were calculated,and the changing regularities of them for inertia atom and D2 collision with the increase of quantum number and the relative kinetic energy of incoming atoms were obtained from this calculation,result：the partial wave cross sections of the 00-00 elastic collision fluctuate continuously as J increasing,and tail effect appears,the situation where fluctuation maxium occurs and convergent partial wave number all changing continuously with the relative kinetic energy increasing of incoming atoms.

关 键 词：能量变化 密耦近似 分波截面 

分 类 号：O562[理学—原子与分子物理]