闭通道对氦氢碰撞激发分波截面影响的研究  

Effect of close channels on the partial wave cross sections of excitation for the collisions of He with H_2

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

出　　处：《原子与分子物理学报》2010年第3期457-462,共6页Journal of Atomic and Molecular Physics

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

摘　　要：采用精确度较高的密耦近似方法计算了不同能量下的氯原子与氢分子碰撞体系的振转激发分波截面.在计算时依次考虑了入射通道中耦合态的数目为开通道数加上1个闭通道数,2个闭通道数,3个闭通道数,直到7个闭通道数的情况.结果表明:在研究氦氢碰撞体系的弹性碰撞、纯转动激发时,可以只考虑1个闭通道的影响,但在研究振转激发分波截面时,至少要考虑5个闭通道,才能得到比较准确的计算结果.The close-coupling method is applied to the collisions of He with H2 systems at different incident energies. The partial wave cross sections of vibrational and rotational excitation are calculated from one close channel to seven close channels. It is established that one close channel will be thought in the partial wave cross sections of elastic collision and rotational excitation. Five close channels must be considered in the partial wave cross sections of vibrational and rotational excitation at least.

关 键 词：原子与分子碰撞 分波截面 密耦近似 闭通道 

分 类 号：O561[理学—原子与分子物理]