通过范德华键的电荷转移使单电荷基态离子发生电子衰减。

Electronic Decay of Singly Charged Ground-State Ions by Charge Transfer via van der Waals Bonds.

机构信息

Universität Kassel, Institut für Physik und CINSaT, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany.

Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland.

出版信息

Phys Rev Lett. 2019 Nov 22;123(21):213001. doi: 10.1103/PhysRevLett.123.213001.

DOI:10.1103/PhysRevLett.123.213001

PMID:31809166

Abstract

We report the observation of the radiative decay of singly charged noble gas ground-state ions embedded in heterogeneous van der Waals clusters. Electron-photon coincidence spectroscopy and dispersed photon spectroscopy are applied to identify the radiative charge transfer from Kr atoms to a Ne_{2}^{+} dimer, which forms after single valence photoionization of Ne atoms at the surface of a NeKr cluster. This mechanism might be a fundamental decay process of ionized systems in an environment.

摘要

我们报告了在非均匀范德瓦尔斯团簇中嵌入的单电荷稀有气体基态离子的辐射衰减观察结果。采用电子-光子符合光谱学和分散光子光谱学来识别 Kr 原子向 Ne_{2}^{+}二聚体的辐射电荷转移，这是在 NeKr 团簇表面的 Ne 原子单价光致电离后形成的。该机制可能是环境中离子化系统的基本衰减过程。