首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Desorption Dynamics of Heavy Alkali Metal Atoms (Rb, Cs) Off the Surface of Helium Nanodroplets
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Desorption Dynamics of Heavy Alkali Metal Atoms (Rb, Cs) Off the Surface of Helium Nanodroplets

机译:氦纳米液滴表面重金属碱原子(Rb,Cs)的解吸动力学

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摘要

We present a combined ion imaging and density functional theory study of the dynamics of the desorption process of rubidium and cesium atoms off the surface of helium nanodroplets upon excitation of the perturbed 6s and 7s states, respectively. Both experimental and theoretical results are well represented by the pseudodiatomic model for effective masses of the helium droplet in the desorption reaction of m_(eff)/m_(He) ≈ 10 (Rb) and 13 (Cs). Deviations from this model are found for Rb excited to the 6p state. Photoelectron spectra indicate that the dopant?droplet interaction induces relaxation into low-lying electronic states of the desorbed atoms in the course of the ejection process.
机译:我们提出了结合离子成像和密度泛函理论研究study和铯原子分别在激发的6s和7s态激发后从氦纳米液滴表面脱附的动力学过程。假渗析模型很好地表示了在m_(eff)/ m_(He)≈10(Rb)和13(Cs)解吸反应中氦滴的有效质量的实验和理论结果。发现该模型与Rb激发到6p状态的偏差。光电子能谱表明,在喷射过程中,掺杂剂-液滴的相互作用引起了被解吸原子的弛豫成低位电子态。

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