材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
酸化マグネシウム単結晶の熱発光
竹内 望稲部 勝幸山下 順司南戸 秀仁中村 昭一吉田 俊夫
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1977 年 26 巻 288 号 p. 868-872

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Thermoluminescence glow curves above room temperature and the related optical absorption spectra have been studied on MgO single crystals irradiated by electrons, X-rays or UV-light, with emphasis on conditions which are of interest for applications to radiation dosimetry. The relatively pure MgO specimens show high response, in which the intensity of thermoluminescence is linear for a wide range of radiation doses.
The glow peak temperatures depend somewhat on impurities contained in the samples, but not on the kind of radiations. The first peak appearing at about 87°C is intimately related to the V- centers. Its intensity decreases in proportion to the optical bleaching of the V- band even under the room light. The third and fourth peaks appearing at about 144 and 180°C are thought to be most suitable for dosimetry use.

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