里德伯原子与中性目标的碰撞

IF 2.5 2区 化学 Q3 CHEMISTRY, PHYSICAL International Reviews in Physical Chemistry Pub Date : 2018-04-03 DOI:10.1080/0144235X.2018.1512201
F. Dunning, S. Buathong
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引用次数: 2

摘要

处于高激发态的里德伯原子具有与处于基态或低激发态的原子完全不同的物理特性。特别是,它们在物理上非常大,只有非常弱的束缚。因此,碰撞可以导致各种各样的反应过程,其中许多是里德伯物种所特有的,并且具有非常大的碰撞截面。在与中性目标的碰撞中,里德伯原子的行为不像一个原子,而是像一对分离良好的独立散射体,即核心离子和激发的里德伯电子。在本文中,我们讨论了当里德伯原子与中性目标碰撞时可能发生的许多不同反应,主要集中在由(二元)里德伯电子-目标相互作用主导的反应,包括与附着自由低能电子的分子和极性目标的碰撞。然而,在某些情况下,涉及里德伯核离子的相互作用是重要的。这是用在冷致密气体中激发的超远程里德伯分子的破坏作为一个例子来说明的。
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Collisions of Rydberg atoms with neutral targets
ABSTRACT Atoms in highly excited Rydberg states possess physical characteristics quite unlike those associated with atoms in the ground or low-lying excited states. In particular, they are physically very large and are only very weakly bound. In consequence, collisions can lead to a wide variety of reaction processes many of which are unique to Rydberg species and have very large collision cross sections. In collisions with neutral targets, Rydberg atoms behave not as an atom but rather as a pair of well-separated independent scatterers, namely the core ion and the excited Rydberg electron. In the present article we discuss many of the different reactions that can occur when Rydberg atoms collide with neutral targets, focusing principally on reactions that are dominated by (binary) Rydberg electron-target interactions and include collisions with molecules that attach free low-energy electrons and with polar targets. In certain situations, however, interactions involving the Rydberg core ion are important. This is illustrated using as an example the destruction of ultralong-range Rydberg molecules excited in a cold dense gas.
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来源期刊
CiteScore
14.20
自引率
1.60%
发文量
5
审稿时长
1 months
期刊介绍: International Reviews in Physical Chemistry publishes review articles describing frontier research areas in physical chemistry. Internationally renowned scientists describe their own research in the wider context of the field. The articles are of interest not only to specialists but also to those wishing to read general and authoritative accounts of recent developments in physical chemistry, chemical physics and theoretical chemistry. The journal appeals to research workers, lecturers and research students alike.
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