Optics and Spectroscopy
To authors
Spectroscopy of divalent samarium in caesium iodide single crystals
Sofich D. O.
1, Shendrik R.Yu
1
1Vinogradov Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia
Email: sofich@igc.irk.ru
The article describes the process and parameters of growing CsI : Sm2+ single crystals by the Czochralski method. Spectroscopic studies of the CsI : Sm2+ single crystal have been carried out; it has been established that samarium ions enter the caesium iodide single crystal in the divalent state. At room temperature, luminescence is observed corresponding to the 4f5d1-4f6 transitions of divalent samarium; on cooling, only radiative 4f6-4f6 transitions are observed. The temperature dependence of the luminescence has been measured, the barrier energy has been determined, and the decay times of the luminescence have been measured. Keywords: luminescence, halides, samarium, scintillators, single crystals.
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