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

开发适用于青少年测定的高灵敏度热释光测量系统

基本信息

批准号：
03554023
负责人：
HASHIMOTO Tetsuo
金额：
$ 4.74万
依托单位：
NIIGATA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1992
项目状态：
已结题

项目摘要

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

为了确认可靠的热发光（TL）追溯到年轻人的历史，使用图像加强二极管阵列单元以及高度敏感的TL测量系统的开发从TL光谱法的两个方面开发了一些基础研究。在前一种情况下，文件数据与综合数据相同，将文件数据转换为综合数据，将文件数据转换为综合数据。最终的三维TL-spectrum可以将波长，温度和TL强度的完成作为轮廓图显示；人们可以轻松地识别出各种弱TL特异性的TL-Spectra的变化。 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 simpletaneous TL-measuring (IPDA) system in blue-and red-regions has been developed for the reliable gelological 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加热器和计算机作为系统控制部件。在加热器和光电倍增器之间使用光管极为有效地收集了弱TL发射，直到几次检测灵敏度。通过使用当前的TL测量系统，在蓝色和红色区域中确定了天然石英晶粒320℃的单个TL峰的动力学参数。最佳曲线拟合程序后，用于评估捕获电子的平均生命的发光曲线的结果。此外，在热退火处理最初的蓝色TL Z-Cut Quartz Slies后，使用IPDA光谱法和TLCI方法分析了TL-蛋白酶；在退火处理900°C以上的切片后的某些部分，从蓝色到红色TL的颜色发生了明显的变化。这个有趣的结果应涉及一些有关自然重量的红色TL原因的信息，这最初是在我们的实验室中发现的。较少的