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VOLUME 39 (1984) | ISSUE 6 | PAGE 261
Thermally stimulated brightening of a crystal boundary in the exciton absorption region
As the temperature of a CdS crystal is raised from 2 to 30 K, the minimum value of the exciton reflection coefficient is observed to decrease. This effect stems from the temperature dependence of the dissipative exciton damping Γ near an interior surface of an exciton-free transition layer. At Τ S 50 К the Γ (Τ) dependence cannot be explained by an exciton-phonon interaction mechanism.