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The thermoluminescence of ajoite is reported. A glow curve measured at 1 °C/s after beta irradiation to 10 Gy shows a high-intensity peak at 76 °C (peak PI) and secondary peaks at 200, 280 and 340 °C (peaks PII-PIV). This study mainly concerns the high-intensity peak, peak PI, although some supplementary material on peak PII is included. The order of kinetics for peak PI was determined to be first order. The activation energy and frequency factor were evaluated as 0.89 ± 0.02 eV and ~1012 s-1 respectively. The peak is affected by thermal quenching with an activation energy of value 0.73 ± 0.03 eV. The structural characteristics of ajoite as studied by X-ray diffraction resemble those of quartz but show additional features owing to presence of impurities. Possible mechanisms responsible for the TL are discussed.
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