Alignment Effect of N2(A3Σu+) in the Energy Transfer Reaction of Aligned N2(A3Σu+) + NO(X2Π) → NO(A2Σ+) + N2(X1Σg+)
Alignment Effect of N2(A3Σu+) in the Energy Transfer Reaction of Aligned N2(A3Σu+) + NO(X2Π) → NO(A2Σ+) + N2(X1Σg+)
复制标题
N2(A3Σu+)在配向N2(A3Σu+)+NO(X2Π)→NO(A2Σ+)+N2(X1Σg+)能量转移反应中的配向效应
DOI：
10.1021/jp303735e
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发表时间：
2012
期刊：
影响因子：
2.9
通讯作者：
H. Ohoyama and S. Maruyama
中科院分区：
文献类型：
--
作者：
T. Endo;H. Murata;M. Imanari;N. Mizushima;H. Seki;K. Nishikawa;H. Ohoyama and S. Maruyama
在交叉束流条件下，利用磁性六极管制备的定向N2（A3 <$u+）束，研究了N2（A3 <$u+）+ NO（X2 <$u+）→ NO（A2 <$u+）+ N2（X1 <$g+）能量转移反应中的位阻效应。已经测量了NO（A2+）的发射强度作为磁取向场方向的函数（即，N2的对齐（A3 = u+））。观察到一个显着的对齐效果的能量转移概率。空间不透明度函数的形状在N2（A3 <$u+）的倾斜构型（γvR相对于相对速度矢量（vR）的取向角为<$45 °）处最具反应性，这与N2（A3 <$u+）的2 p πg* 分子轨道的空间分布有很好的相关性。提出了N_2（2 p πg ~*）和NO（6σ）之间的轨道重叠控制能量转移几率的电子交换机制。
Steric effect in the energy transfer reaction of N2(A3Σu+) + NO(X2Π) → NO(A2Σ+) + N2(X1Σg+) has been studied under crossed beam conditions at a collision energy of ∼0.07 eV by using an aligned N2(A3Σu+) beam prepared by a magnetic hexapole. The emission intensity of NO(A2Σ+) has been measured as a function of the magnetic orientation field direction (i.e., alignment of N2(A3Σu+)) in the collision frame. A significant alignment effect on the energy transfer probability is observed. The shape of the steric opacity function turns out to be most reactive at the oblique configuration of N2(A3Σu+) with an orientation angle of γvR∼ 45° with respect to the relative velocity vector (vR), which has a good correlation with the spatial distribution of the 2pπg* molecular orbital of N2(A3Σu+). We propose the electron exchange mechanism in which the energy transfer probability is dominantly controlled by the orbital overlap between N2(2pπg*) and NO(6σ).