Time dependence of the luminescence intensity in CdBr: AgCl,PbBr crystals under N-laser excitation at room temperature.

Autor:	Bolesta, I., Kalivoshka, B., Karbovnyk, I., Lesivtsiv, V., Novosad, I., Novosad, S., Rovetskyy, I., Velgosh, S.
Předmět:	CADMIUM compounds SILVER compounds METAL crystals NITROGEN EFFECT of temperature on metals LUMINESCENCE spectroscopy
Zdroj:	Materials Science-Poland; Dec2014, Vol. 32 Issue 4, p604-609, 6p
Abstrakt:	Results of optical-luminescence studies of polydoped photochromic CdBr: AgCl,PbBr crystals are presented. It is shown that the luminescence decrease vs. time under N-laser excitation in the range of A-band of Pb absorption is due to photochemical reactions. The empirical model describing the decrease of the luminescence related to silver impurities due to photochemical processes is suggested. Model parameters (trapping cross-section - σ - and the amount of centres destroyed by irradiation - β) were determined using the comparative analysis of experimental and calculated luminescence decay curves. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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