一种天然正长石的释光特性

应用RGB-3B型热释光仪和BG2003释光谱仪对一种正长石矿物的热释光和选频释光发光曲线进行测定，获得正长石的释光特性。研究表明：天然正长石的三个热释光峰峰温为148，197，310 ℃，辐照一定剂量后，出现197 ℃和263 ℃两个稳定的热释光峰。正长石的峰位温度随着增温速率的减小，向左移动。选频热释光290, 300, 310, 340, 400, 480 nm存在释光响应，选频绿光释光280, 290, 300, 310, 320, 400, 460, 480 nm存在释光响应，400 nm频道的光子计数随剂量的变化具有一定的线性关系，具有辐射剂量计的特性，具备释光测年的应用潜力。

Luminescence Properties of a Natural Orthoclase

The thermoluminescence characteristics and selected frequency luminescence characteristics of an orthoclase were studied using RGD-3B thermoluminescence dosimeter and BG2003 luminescence spectrograph. The result indicates that the orthoclase has three thermoluminescence peaks and the temperatures of these peaks are 148, 197 and 310 ℃ respectively. The 197 and 310 ℃ thermoluminescence peaks appear when it has been irradiated. The temperature of peak value deceases with the decease in warming rates. The luminescence signal is obvious at 290, 300, 310, 340, 400 and 480 nm wavelength with heat excitation. The luminescence signal is obvious at 280, 290, 300, 310, 320, 400, 460 and 480 nm wavelength with 532nm light excitation. The certain linear relation exists between the photon counts from 400 nm and irradiation doses. It can also be used as a dosimeter. It has application potential in luminescence dating.