Eur. Phys. J. D (2017) 71: 227
https://doi.org/10.1140/epjd/e2017-80142-6

Regular Article

The RgI₂ (ion-pair states) van der Waals complexes^*

Department of Physics, Saint Petersburg State University, SPbSU, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia

^a e-mail: v.baturo@spbu.ru

Received: 2 March 2017
Received in final form: 21 June 2017
Published online: 5 September 2017

Abstract

This paper is an overview of our recent experimental investigations of the RgI₂ van der Waals complexes, Rg = He, Ar, Kr, performed by means of laser induced fluorescence spectroscopy, optical-optical double resonance and supersonic molecular beam techniques. Spectroscopic parameters of these complexes in the E0_g⁺ ion-pair state, such as binding energies and several spectroscopic constants, have been determined. Most likely, the potential energy surfaces of the all RgI₂(E) complexes under study present T-shaped minima. Vibrational and electronic predissociations of the RgI₂(E) complexes were analyzed. Relative contributions of the different electronic predissociation channels and vibrational distributions of the decay products were determined. Possible mechanisms of the complexes decay are suggested and discussed.