Collision induced electronic energy transfer between the A 2∏ui (v=4) and X 2∑+g (v=8) rotational manifolds of N+2
Collision induced electronic energy transfer between the A 2∏ui (v=4) and X 2∑+g (v=8) rotational manifolds of N+2
复制标题
N+2 的 A 2∏ui (v=4) 和 X 2Σ+g (v=8) 旋转流形之间碰撞引起的电子能量转移
DOI：
10.1063/1.448076
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发表时间：
1984
影响因子：
4.4
通讯作者：
D. Katayama
中科院分区：
文献类型：
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作者：
D. Katayama
用双激光、光学-光学双共振技术直接探测了14N+2的A 2∏UI(v=4)和X 2∑+g(v=8)转动流形之间的电子能量传递过程。首次得到了同核分子的碰撞选择或倾向规则，该规则在两个态之间没有微扰或‘门’。S→S，a→a和S⇄a的选择规则被显示为适用于这种电子能量转移过程。尽管这两种机制之间存在竞争，但仍有倾向于ΔJ≊0而不是ΔE(能隙)≊0的倾向。这些选择或倾向规则是光学的，似乎是碰撞诱导的电偶极跃迁的结果。因此，这些是真正的电子能量转移过程，而不是一种形式的旋转能量转移，当已知转动能级在f中被扰动时发生的。
A two laser, optical–optical double resonance technique has been used as a direct probe of the electronic energy transfer process between the A 2∏ui (v=4) and X 2∑+g (v=8) rotational manifolds of 14N+2. For the first time collisional selection or propensity rules are obtained for a homonuclear molecule which has no perturbations or ‘‘gates’’ between the states involved. The selection rules s→s, a→a, and s⇄a are shown to apply for this electronic energy transfer process. The transfer rate is shown to be comparable to that for rotational energy transfer and in spite of the competition between these two mechanisms it is demonstrated that there is a propensity towards ΔJ≊0 rather than ΔE (energy gap) ≊0. These selection or propensity rules are optical‐like and appear to result from collision induced electric dipole transitions. Therefore, these are truly electronic energy transfer processes rather than a form of rotational energy transfer as occurs when the rotational levels are known to be perturbed in the f...