Optically-stimulated desorption of «hot» excimers from pre-irradiated Ar solids

Abstract

Electronically-induced desorption from solid Ar pre-irradiated by a low-energy electron beam was investigated by activation spectroscopy methods—photon-stimulated exoelectron emission and photon-stimulated luminescence in combination with spectrally-resolved measurements in the VUV range of the spectrum. Desorption of vibrationally excited argon molecules Ar₂ *(ν) from the surface of pre-irradiated solid Ar was observed for the first time. It was shown that desorption of «hot» Ar₂ *(ν) molecules is caused by recombination of self-trapped holes with electrons released from traps by visible-range photons. The possibility of optical stimulation of the phenomenon is evidenced.