Stimulated emission pumping of intermolecular vibrations in OH–Ar(X 2Π)
Stimulated emission pumping of intermolecular vibrations in OH–Ar(X 2Π)
复制标题
OH–Ar(X 2Π) 中分子间振动的受激发射泵浦
DOI：
10.1063/1.462342
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发表时间：
1992
影响因子：
4.4
通讯作者：
M. Lester
中科院分区：
文献类型：
--
作者：
Mary T. Berry;Richard A. Loomis;L. Giancarlo;M. Lester
受激发射光谱已被用于访问由OH（X 2Π）+Ar（1 S 0）势能面支持的分子间弯曲和拉伸振动。OH-Ar弯曲能级的流形与OH（2 <$3/2）的转动能级j=（3）/（2），（5）/（2）和（7）/（2）相关，分子间伸缩为0 ~ 3个量子。在与OH（2Π1/2）相关的自旋轨道激发态的分子间振动能级上也制备了OH-Ar配合物。第一个解离极限，产生OH（2 <$3/2）v=0，j=（3）/（2）+Ar（1 S 0）碎片，已被确定位于零点能级以上93至103 cm−1之间。在亚稳态水平制备的复合物，检测到超过第一解离极限200 cm−1，通过使用OH旋转或自旋轨道激发来破坏OH-Ar分子间键进行预解离。
Stimulated emission spectroscopy has been used to access the intermolecular bending and stretching vibrations supported by the OH(X 2Π)+Ar(1S0) potential‐energy surfaces. Manifolds of OH–Ar bending levels, correlating with the j= (3)/(2) , (5)/(2) , and (7)/(2) rotational levels of OH(2Π3/2), have been observed with zero to three quanta of intermolecular stretch. OH–Ar complexes have also been prepared in intermolecular vibrational levels of the spin–orbit excited state correlating with OH(2Π1/2). The first dissociation limit, producing OH(2Π3/2) v=0, j= (3)/(2) +Ar(1S0) fragments, has been determined to lie between 93 and 103 cm−1 above the zero‐point level. Complexes prepared in metastable levels, detected up to 200 cm−1 beyond the first dissociation limit, undergo predissociation by using OH rotational or spin–orbit excitation to break the OH–Ar intermolecular bond.