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Self-Trapping of Excitons in Rare Gas Solids: Measurement of Self-trapping Rates and Influence of Dimensionality

E. Roick, R. Gaethke, P. Gürtler, and G. Zimmerer

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Abstract

The wavelike exciton states (free excitons, FE) in rare gas solids (RGS) are not stable. Exciton-phonon interaction induces a lattice deformation at which the excitons are self-trapped (STE). The FE and STE states are separated by a potential barrier. Therefore, in the luminescence spectra of (the heavier) RGS, FE and STE emission coexist1,2. This paper presents new experimental results concerning (i) the self-trapping rate and (ii) the influence of dimensionality on self-trapping.

© 1984 Optical Society of America

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