He-BH碰撞体系分波截面及电荷分布的研究  

Study on the partial cross section and charge distribution for He-BH collision system

作　　者：汪荣凯[1] 张金生[1] 

机构地区：[1]贵州师范大学化学与材料科学学院,贵州贵阳550001

出　　处：《贵州师范大学学报（自然科学版）》2011年第3期127-131,共5页Journal of Guizhou Normal University：Natural Sciences

基　　金：贵州省科技厅与贵州师范大学联合基金(批准号:黔科合J字LKS[2009]01号)

摘　　要：用密耦近似方法计算了入射能量分别为25meV、75 meV、125 meV和150meV时,He原子与基态BH分子碰撞的分波截面。计算结果表明:在总分波截面尾部效应极大值对应的碰撞参数附近,径向偶极发生转向;总分波截面最大峰的位置几乎对应于He原子具有最大负电荷的位置。The partial cross section for collision between He atom and ground state of BH molecule has been calculated by close-coupling approximation method. This calculation is performed at the incident energies of 25meV,75meV, 125meV and 150meV,respectively. The result suggests that the radial di- pole steers in the vicinity of the impact parameter corresponding to the maximum of the total partial cross section （TPCS） tail effect, and the maximum peak position of the TPCS nearly corresponds to the position where the He atom has the largest negative charge.

关 键 词：He—BH复合物 密耦近似 散射截面 分波截面 电荷分布 

分 类 号：O561.5[理学—原子与分子物理]