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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Photoassociation Spectroscopy in Penning Ionization Reactions at Sub-Kelvin Temperatures
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Photoassociation Spectroscopy in Penning Ionization Reactions at Sub-Kelvin Temperatures

机译:亚开尔文温度下潘宁电离反应中的光缔合光谱

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摘要

Penning ionization reactions in merged beams with precisely controlled collision-energies have been shown to accurately probe quantum mechanical, effects in reactive collisions. A complete microscopic understanding of the reaction is) however, faced with two major challenges the highly excited character of the reaction's entrance channel and the limited precision of even the best state-of-the-art ab initio potential energy surfaces. Here, we suggest photoassociation spectroscopy as a tool to identify the character of orbiting resonances in the entrance channel and probe the ionization width as a function of interparticle separation. We introduce the basic concept, using the example of metastable helium and argon, and discuss the general conditions under which this type of spectroscopy will be successful.
机译:研究表明,具有精确控制的碰撞能量的合并束中的潘宁电离反应可以准确探测反应性碰撞中的量子力学效应。然而,对反应的完整的微观理解面临着两个主要挑战,即反应进入通道的高度兴奋特性以及即使是最先进的从头算势能面的有限精度。在这里,我们建议使用光缔合光谱法来鉴定进入通道中轨道共振的特征,并探测电离宽度与颗粒间分离的关系。我们以亚稳态氦和氩为例,介绍了基本概念,并讨论了这种光谱法成功的一般条件。

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