Spectroscopy of Mixed Ar-Xe Clusters: Formation of a Xenon Core

摘要

The spectra of vacuum ultraviolet luminescence of heteroatomic Ar-Xe clusters condensed insupersonic jets of a mixture of these gases at a xenon impurity concentrations of 0.001-2percent are measured. A new group of molecular luminescence bands of argon-xenon centers is recorded, which allows a highly sensitive detection of xenon in the argon matrix of a cluster. The phenomenon of phase separation into pure components with formation of a sharp interface between the xenon core and argon shell of the cluster is found.