转动传能中NH_2()精细结构态变化的研究  

The Study of the Change of Fine-structures in Rotational Energy Transfer of NH_2()

作　　者：张敏[1] 沈关林[1] 李学初[1] 王秀岩[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《Chinese Journal of Chemical Physics》2001年第1期27-32,共6页化学物理学报（英文）

基　　金：国家自然科学基金!资助项目 ( 2 98730 51)&&

摘　　要：利用高分辨光谱技术观察了NH2 ( A2 A1,0 90 ) 42 3(F1/F2 )在单次碰撞条件下的精细态色散荧光光谱 ,发现NH2 ( A2 A1)在与闭壳层分子碰撞传能过程中 ,母能级的自旋 -转动耦合守恒 ,从实验上直接证实了在开壳层 -闭壳层分子碰撞过程中电子自旋为一旁观者的假设 ;由于长程作用力造成子能级具有保持原来自旋 -转动耦合的倾向。By using the high resolution dispersion spectra of NH 2( 2A 1, 090) 4 23 (F 1/F 2) it is observed that the spin rotational conservation transition is dominant for the parent levels. It confirms the assumption that the electron is a spectator at single collision between open shell and close shell molecules. As to the daughter levels, the tendency for the conservation of the spin-rotation coupling of the parent level is found and may be explained by the long range interaction between those molecules.

关 键 词：NH2自由基 转动传能 精细结构态 化学反应机理 

分 类 号：O643[理学—物理化学]