Hot luminescence of self-trapped excitons in atomic cryocrystals

Vibrational relaxation and hot luminescence of self-trapped excitons in Xe and Kr crystals have been studied experimentally and theoretically. Crystals were grown from the liquid in a He cryostat near the triple point under near-equilibrium conditions. Two-photon excimer laser excitation was used in...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 284; pp. 1129 - 1130
Main Authors Hizhnyakov, Vladimir, Kink, Margarita, Kink, Rein, Lõhmus, Ants, Maksimov, Juri, Selg, Matti
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2000
Subjects
Hot luminescence
Rare gas crystals
Self-trapped excitons
Hot luminescence
Self-trapped excitons
Rare gas crystals
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Summary:Vibrational relaxation and hot luminescence of self-trapped excitons in Xe and Kr crystals have been studied experimentally and theoretically. Crystals were grown from the liquid in a He cryostat near the triple point under near-equilibrium conditions. Two-photon excimer laser excitation was used in luminescence experiments. The emission spectra have been recorded with the help of a double vacuum monochromator. Theoretical treatment was based on a new nonperturbative approach, which predicts abrupt acceleration of relaxation near characteristic amplitudes of the local vibration. Fully quantum-mechanical calculation of the hot luminescence spectrum of the quasi-molecular centre Xe 2 ∗ in solid Xe has been performed and good fit with the experimental spectrum achieved.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)02515-6