MgO単結晶の熱蛍光中心

概要

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"The effects of Cr^<3+> and Fe^<3+> impurity concentrations on the kinetics order of the first glow peak of thermoluminescence in MgO single crystals have been examined. It was found that the concentration of Cr^<3+> ions affected the kinetics order of the red component of the luminescence and that of the Fe^<3+> ions the blue one. When these impurity concentrations are relatively low, the second order kinetics is expected, while with increasing concentration the kinetics order should decrease and become tile first order. Several such examples have been observed for both red and blue emissions. This may support the consideration that the Cr^<3+> and Fe^<3+> ions work as the luminescent centers for red and blue emissions, respectively. The annealing temperature before irradiation is considered to control the valence conversion of the impurities.
社団法人日本材料学会の論文
1984-06-15