Li_2B_4O_7 の熱蛍光特性とその不純物依存性

概要

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Thermoluminescence (TL) of two types of Li_2B_4O_7 polycrystals prepared by crystallizing bulk glass and sintering powder compact has been investigated. The effect of impurity on the TL was examined by using the samples containing different purities with or without CuCl_2 doping. In general, these materials showed four glow peaks located at about 95, 160, 205, and 260℃, of which the peak at 260℃ was newly found in this study. It was found that the relative intensity of the glow peak depended on the way of preparation of the polycrystalline samples as well as impurities. In the case of doping with CuCl_2 the 260℃ peak was remarkable in polycrystalline materials made by sintering powder compact, while the 160℃ peak was remarkable for those made by crystallizing bulk glass. The characteristics of the 260℃ peak which may be suitable for radiation dosimetry were investigated in detail.
社団法人日本材料学会の論文
1985-06-15