He原子与NO相互作用势及碰撞微分截面的研究
A theoretical study on interaction potential energy surface and collision differential cross sections of He- NO
令狐荣锋 1徐梅 2项飞羽 2吕兵 2杨向东3
作者信息
- 1. 贵州师范学院物理与电子科学学院,贵州贵阳550018
- 2. 贵州师范大学物理与电子科学学院,贵州贵阳550001
- 3. 四川大学原子与分子物理研究所,四川成都610065
- 折叠
摘要
用量子力学从头算方法深入研究了He原子与NO分子的相互作用势,根据精确计算相互作用势的方法,选用CCSD(T)/6—311++G(3dr,2pd)方法和基组,同时采用了Boys和Bernardi提出的FullCouter-poise方法,消除了计算中的基组重叠误差(BSSE),计算了该体系的各项异性相互作用势的单点能数据,得出了空间势能面的分布情况,得出了较为准确的He—NO体系相互作用势的解析表达式。通过计算得到的微分截面与实验值符合较好,在此基础上计算得出了He原子同位素与NO分子的碰撞的微分截面的规律。
Abstract
In this paper, the ab initio quantum mechanics method is used for a further investigation of the inter- aetional potential energy functions of He atom and NO. According to the accurately calculation method of interaction potential, the He -NO interactional potential energy functions was obtained by using QCISD(T)/6 -311 + + G( 3d f, 2pd) with Boy and Bernardi Full Couterpoise to eliminate the basis set superposition error (BSSE). The calculated differential cros sections of He - NO collision is in good agreement with the experiment data. The rule of differential cross sections of He isotope collides with NO has been derived.
关键词
He—NO/相互作用势/He同位素/碰撞/微分截面Key words
He - NO/interactional potential energy function/He isotope/collision/differential cross section引用本文复制引用
基金项目
国家自然科学基金(10964002)
国家自然科学基金(10974139)
贵州省科学技术基金(黔科合J[2009]2066号和[2009]07号)
贵州省高层次人才科研条件特助项目(TZJF-2008年-42号)
贵州师范大学资助博士科研项目()
出版年
2012