銅およびカルシウムを含んだ NaCl 単結晶の熱蛍光

概要

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The charge carrier trapped centers responsible for the Thermoluminescence in irradiated NaCl: Cu^+ and NaCl:Ca^<2+>, Cu^+ single crystals have been detected by ESR. Cu^<2+> ions accompanying positive ion vacancies at their next nearest neighbor sites disappeared by heating the NaCl : Cu^+ crystals at about 70℃, which corresponds to the temperature where the first glow peak appears. This indicates that the peak is due to the recombination of thermally released electrons and Cu^<2+> ions. The higher temperature glow peaks showed different emission spectra from that of the first peak, indicating that the mechanisms are different. The Cl_2- molecular ions stabilized by the I-V (impurity-vacancy) dipoles and the D_1-like centers were observed in NaCl:Ca^<2+>, Cu^+ crystals, which work as the hole trapped species in Thermoluminescence.
社団法人日本材料学会の論文
1985-01-15