熱ルミネッセンスによる原爆線量の測定-2-

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The equivalent gamma dose of bomb radiation can be obtained by comparing the glow-curves resulting from bombs with those from the Co60 irradiation. A comparison between the bomb glow-curves and artificial glow ones shows that the former ones decay at the part of the low temperature ( about 100°C). As for the part of the high temperature (about 200°～250°C) , both of these glow-curves show nearly the same shape except for a little deformation which may be induced by complex structre of the mineral composition of the roof tiles sample. But in measurement of absorbed doses from atomic bombs by thermoluminescence, the above little deformation mentioned above exerts a vicious influence upon an accurate measurement. Therefore, Roof-tiles sample was separated into colourless minerals and coloured minerals by means of a magnetic separator. The colourless mineral component of the samples showed that the thermoluminescence intencity was about five times as large as that of natural samples and a little deformation was removed, as is shown in Fig.5 and Fig. 6. The area of the two curves was measured in the temperature range 200°C～250°C using a planimeter and the equivalent gamma doses were obtained from the treatedsamples, as shown in Table 2 and Table 3.
奈良学芸大学の論文