沙漠砂选频释光特性差异研究  

The Research of Characteristic Difference of Selected Frequency Luminescence for Desert Sand

作　　者：刘超[1] 魏明建[1] 李虎侯[1] 

机构地区：[1]首都师范大学资源环境与旅游学院,北京100048

出　　处：《核电子学与探测技术》2011年第4期432-435,共4页Nuclear Electronics & Detection Technology

基　　金：北京市教委科技计划基金重点资助项目(KZ200810028015);国家自然科学基金资助项目(40871017);北京市自然科学基金资助项目(8102013)

摘　　要：通过使用BG2003型选频释光仪,对巴丹吉林沙漠四组表层砂样品进行了选频释光特性测定。测定指标包括附加剂量的选频光释光图谱、选频热释光图谱以及剂量响应曲线。各组数据和图谱表明,样品响应波长的光子计数均表现为两峰型,但组与组之间存在差异。在样品测定过程中采用光激发与热激发两种激发方式,并对样品的各响应波长上的光子计数进行离散程度分析,从而得出采用热激发方式进行分频接收效果更为理想。The characters of selected frequency luminescence of four groups of samples from Badain Jaran desert are measured by BG2003 luminescence spectrograph. The measurement subjects include selected frequency optical stimulate luminescence spectrum, selected frequency thermoluminescence spectrum and the dose response curve. A double - peak map is obtained by the result from all groups of data and spectrum. The difference is e- merged between each group. The optical stimulate luminescence and thermoluminescence is applied in the measurement process. The dispersion of photon count on every response wavelength is analyzed. Based on the analysis, a better result can be gained by selected frequency thermoluminesceince.

关 键 词：选频释光 沙漠砂 特征波长 

分 类 号：TL818[核科学技术—核技术及应用]