Abstract
The influence of X-ray irradiation on the optical absorption of K-atoms in Ar-matrices was studied as a function of time and temperature. Exponential decrease of the so-called red and blue triplet absorptions was observed. Simultaneously a new absorption in the range of the red triplet was built up. The new absorption could alternatively be produced by light irradiation into the red or the blue triplet, as was shown in a second experiment studying correlated optical and ESR-absorption. After annealing at 15 K the new absorption disappeared, and the original absorptions were largely restored. All experimental results can well be understood in terms of exciton production, self-trapping, and deexcitation, and are described by a master equation system.
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Steinmetz, A., Schrimpf, A., Stöckmann, H.J. et al. Site modification of K atoms in solid Ar by X-ray and light irradiation. Z Phys D - Atoms, Molecules and Clusters 4, 373–378 (1987). https://doi.org/10.1007/BF01384890
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DOI: https://doi.org/10.1007/BF01384890