Thermally stimulated luminescence in ZnMoO₄ crystals

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• 作者：V.Ya. Degoda^a ; Ya.P. Kogut^a ; I.M. Moroz^a ; ; F.A. Danevich^b
• 关键词：Thermally stimulated luminescence ; ZnMoO4 crystals ; X-ray excitation ; accumulation of light sum ; traps in crystal phosphor
• 刊名：Journal of Luminescence
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：183
• 期：Complete
• 页码：424-432
• 全文大小：913 K
• 卷排序：183

文摘

Thermally stimulated luminescence in ZnMoO4 crystals after X-ray irradiation at temperatures 8 K, 85 K and 295 K was studied. A theoretical model of crystal phosphor with three types of traps (shallow, phosphorescent and deep) is proposed. Simple analytic solutions of the kinetic equations system describing localized electrons on the traps and holes on recombination centres were obtained by using approximations accepted in the classic theories of crystal phosphors. Analytical curves describing thermally stimulated luminescence were obtained. A substantial effect of the different traps concentrations ratios on the thermally stimulated luminescence and conductivity peaks shapes is shown. A good agreement of the theoretical curves with the experimental data for the thermally stimulated luminescence peak at 114 K is obtained.