Development of measuring system for highly sensitive thermoluminescence applicable to young age determination

为了确定可靠的热释光年轻年龄，从图像增强二极管阵列热释光光谱和高灵敏度热释光测量系统的开发两个方面进行了一些基础研究。在热释光测量系统中，随着数据大小的缩短，来自光谱系统的文件数据从二进制转换为十进制码。最终的三维热释光光谱，包括波长、温度和热释光强度，可以显示为等高线图；人们可以很容易地识别各种弱热释光样品的热释光光谱的变化。此外，文件数据还可以用来表示所需波长和温度区域的发光曲线和光谱。在后者中，已经开发了红蓝区域的同步热释光测量系统，用于可靠的地质年龄测定和利用两个p-…进行考古测年更多的霍顿计数部件，一个新设计的加热器，安装了一个石英玻璃和两个陶瓷加热器，以及一台计算机作为系统控制部分。在加热器和光电倍增管之间应用光管非常有效地收集微弱的TL发射，直到探测灵敏度提高了几倍。利用目前的热释光测量系统，测定了天然石英颗粒在320ﾟC处蓝区和红区的单一热释光动力学参数。对发光曲线进行最佳曲线拟合后的结果被用来评估俘获电子的平均寿命。此外，用IPDA光谱和TLCI方法分析了原始的蓝TL Z切割石英片的热释光性质；在超过900ﾟC的退火处理后，片的某些部分意外地发生了从蓝到红的明显颜色变化。这一有趣的结果值得参考我们实验室初步发现的一些关于天然石英石上红致发光的原因的信息。较少

For the confirmation of reliable thermoluminescence (TL) dating toward young age, some basic research has been developed from both aspects of TL-spectrometry using an image intensified diode array unit and the development of highly sensitive TL-measuring system.In the former case, the file data, consisting of about 1 Mbite or more, from the spectrometric system were converted from binary into decimal code along with shortening data sizes. The final three dimensional TL-spectrum, comprising of wavelengths, temperatures, and TL-intensities, could be displayed as a contour map; one could easily recognize the change of TL-spectra for a variety of weak TL-specimens. Furthermore, the file data could be used for the presentation of glow-curves and spectrum in the desired wavelength and temperature regions.In the latter, the simultaneous TL-measuring (IPDA) system in blue-and red-regions has been developed for the reliable gelogical age determination as well as archeological dating using two p … More hoton-counting parts, a newly devised heater installed with a quartz glass and two ceramics heaters, and a computer as a system control part. The application of a light pipe between the heater and a photomultiplier extremely served the effective collection of weak TL-emission until several times in detection sensitivity. By using the present TL-measuring system, the kinetic parameters regarding a single TL-peak at 320ﾟC of the natural quartz grains were determined in both blue-and red-regions. The results after best-curve fitting procedure to glow-curves utilized for the evaluation of mean lives of the trapped electrons.Moreover, the TL-properties were analyzed using both IPDA spectrometry and TLCI-method after thermally annealing treatment of originally blue-TL Z-cut quartz slices; an apparent color change from blue-to red-TL has unexpectedly occurred in some parts of slices after annealing treatment beyond 900ﾟC. This interesting result should suggested with respect of some information about causes of red-TL on natural quartzes, which has been initially found in our laboratory. Less