| 低碰撞能下Ne原子对LiH分子转动猝灭的研究 |
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| 引用本文： | 黄武英,凤尔银,崔执凤,张为俊.低碰撞能下Ne原子对LiH分子转动猝灭的研究[J].原子与分子物理学报,2006,23(2):249-254. |
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| 作者姓名： | 黄武英 凤尔银 崔执凤 张为俊 |
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| 作者单位： | 1. 安徽师范大学物理系,安徽,24100
2. 中国科学院安徽光学精密机械研究所,安徽,230031 |
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| 基金项目： | 安徽省教育厅自然科学研究基金(2003kj169)，安徽省教育厅高校青年教师基金(2005jq1045)，安徽省重点学科建设基金. |
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| 摘 要： | 用密耦方法首次研究了Ne原子和LiH分子低能碰撞下的转动猝灭过程.在碰撞能低于10-4cm-1时,弹性截面趋于常数值,非弹性截面随碰撞速度减小线性增加,遵循Wigner定则预言的趋势.对于一个给定的能量,总的猝灭截面是随着初始j的增加而减少的.当能量在0.01~100 cm-1范围内,弹性和非弹性截面均比其它的体系表现出更复杂的振荡行为,这主要是由于体系具有强的各向异性以及它们具有两个吸引阱而造成的.计算表明,在零温极限下,猝灭速率系数达到10-11cm3s-1数量级.当j=7速率系数出现反转结构.
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| 关 键 词： | LiH分子 低能碰撞 转动猝灭 |
| 文章编号： | 1000-0364（2006）02-0249-06 |
| 收稿时间： | 3/8/2005 12:00:00 AM |
| 修稿时间： | 2005-03-08 |
Rotational quenching of LiH by Ne at low energy |
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| HUANG Wu-ying,FENG Er-yin,CUI Zhi-feng,ZHANG Wei-jun.Rotational quenching of LiH by Ne at low energy[J].Journal of Atomic and Molecular Physics,2006,23(2):249-254. |
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| Authors: | HUANG Wu-ying FENG Er-yin CUI Zhi-feng ZHANG Wei-jun |
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| Institution: | 1. Department of Physics., Anhui Normal University, Anhui 241000, P. R. China; 2. Laboratory of Environment Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, P.R. China |
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| Abstract: | Rotational quenching of LiH by Ne at low energy is first studied using the close coupling approach.At incident energies below 10~(-4) cm~(-1),the inelastic quenching cross sections are found to be inversely proportional to the velocity of the incoming Ne atom in agreement with Wigner threshold law,and the elastic cross sections are found to tend to constant limiting values.For a given energy,the total quenching cross sections decrease in general with increasing initial j.In the energy range E_j=0.01-100 cm~(-1) the elastic and inelastic cross sections show more complicated oscillational behaviors than other studied systems,due to the stronger anisotropy and two attractive wells of the interaction potential.The calculations show the quenching rate coefficients attain their values of the order of 10~(-11) cm~3 s~(-1) at zero temperature limiting.For j=7 the rate coefficient presents upturn structure. |
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| Keywords: | LiH molecule low energy collision rotational quenching |
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