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

G. B. Gumenchuk, I. V. Khyzhniy, M. A. Bludov, S. A. Uyutnov, A. G. Belov, E. V. Savchenko, A. N. Ponomaryov, V. E. Bondybey

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Abstract

Electronically induced desorption from solid Ar pre-irradiated by a low-energy electron beam is 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*() from the surface of pre-irradiated solid Ar is observed for the first time. It is shown that desorption of "hot" Ar2*() 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.

Original languageEnglish
Pages (from-to)241-244
Number of pages4
JournalLow Temperature Physics
Volume34
Issue number3
DOIs
StatePublished - 2008

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