论文标题
浸入母体气体的冷分子离子的振动淬灭
Vibrational quenching of cold molecular ions immersed in their parent gas
论文作者
论文摘要
杂化离子原子系统为在低温下进行量子效应的状态分辨量子化学的研究提供了一个极好的平台。在这里，我们从理论上研究了由于与背景气体的碰撞而导致的最初弱结合的分子离子的振动松弛过程。我们表明，这种非弹性过程受相互作用电位的通用远程部分的控制，该过程允许使用适用于多种原子种类的简化模型电位。碰撞后的产品分布可以通过使用扭曲的波出生近似来估算。我们发现，非弹性碰撞主要导致分子离子的结合能的微小变化。
Hybrid ion-atom systems provide an excellent platform for studies of state-resolved quantum chemistry at low temperatures, where quantum effects may be prevalent. Here we study theoretically the process of vibrational relaxation of an initially weakly bound molecular ion due to collisions with the background gas atoms. We show that this inelastic process is governed by the universal long-range part of the interaction potential, which allows for using simplified model potentials applicable to multiple atomic species. The product distribution after the collision can be estimated by making use of the distorted wave Born approximation. We find that the inelastic collisions lead predominantly to small changes in the binding energy of the molecular ion.
