一种天然正长石的释光特性  

Luminescence Properties of a Natural Orthoclase

作　　者：周锐[1,2,3] 魏明建[1,2,3] 刘俊新[1,3] 张彬[1] 胡晓婷[4] 宋波[1] 赵秋月[1] 

机构地区：[1]首都师范大学资源环境与旅游学院,北京100048 [2]资源环境与地理信息系统北京重点实验室,北京100048 [3]国家重点实验室培育基地--城市环境过程与数字模拟,北京100048 [4]首都师范大学数学科学学院,北京100048

出　　处：《光谱学与光谱分析》2013年第6期1631-1635,共5页Spectroscopy and Spectral Analysis

基　　金：北京市自然科学基金重点项目B类项目(KZ201210028034);北京市自然科学基金项目(8102013)资助;国家自然科学基金资助项目(40871017)

摘　　要：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290,300,310,340,400,480nm存在释光响应,选频绿光释光280,290,300,310,320,400,460,480nm存在释光响应,400nm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。The thermoluminescence characteristics and selected frequency 1 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 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.

关 键 词：正长石 释光特性 矿物 物理性质 

分 类 号：O482.31[理学—固体物理]