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Construction of Four-Dimensional Luminescence-Measuring System for Physico-Chemical Research of Solid Materials

固体材料物理化学研究四维发光测量系统的构建

基本信息

批准号：
14340231
负责人：
HASHIMOTO Tetsuo
金额：
$ 9.41万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

Radiation-induced luminescence phenomena from natural white minerals, including quartz and feldspar, are not only available for the radiation dosimetry, but also for archaeological and geological dating purposes. In the latter case, the accumulated radiation doses are used because the doses are proportional to the ages after the last burning or sunlight exposure. In this project, the luminescence phenomena have been investigated from aspects of physico-chemical research tool of solid dielectric materials.A new instrumental system has been developed for four-dimensional luminescence measurements, involving luminescence intensity, wavelength of luminescence, heating temperatures, and positions, using 3-CCD video camera with high sensitivity of light detection. Finally the camera could photograph area of 10x10 mm by selecting suitable lens combination between dark box placed luminescent specimen and sensitive area of video-camera because the radiation-induced luminescence is extremely wea … More k intensity. One picture plane, consisting of 512x672 pixels and 12 bit data of RGB per one pixcel, was realized to be transferred into personal computer memory within 1 second, In the viewpoint of the elimination of dead time loss, the phographic procdure of 2 seconds for every picture was found to be preferable. The final video-camera data-numbers amounted to 350 Mbytes under thermoluminescence observation of every 2-second from 100 to 450℃.By using the compiled luminescence data on the memory, 100 pixcels were selected out from the CRT-surface picture and followed to the desirable analysis and mutual comparison with other pixcel area with respect of glowcurve-behavior of respective RGB-color regions. As a result, it was established that luminescent difference could be easily distinguished from the data-file, for example, between BTL-quartz grains and RTL-ones. This system was found to be very hopeful for the provenance search of soils and the detection of local lattice defects in dielectric material related to material ageing. Less

包括石英和长石在内的天然白色矿物的辐射诱导发光现象不仅可用于辐射剂量测定，还可用于考古和地质测年。在后一种情况下，使用累积的辐射剂量，因为剂量与最后一次燃烧或阳光照射后的年龄成比例。本项目从固体介质材料的物理化学研究工具出发，研究了固体介质材料的发光现象，利用高灵敏度的3-ccd摄像机研制了一种新型的四维发光测量系统，包括发光强度、发光波长、加热温度和位置。在暗盒放置的发光样品和摄像机的敏感区域之间选择合适的镜头组合，最终可以拍摄10x10 mm的区域，因为辐射诱导的发光是非常弱的…钾强度越大。实现了在1秒内将512×672个像素和12位RGB数据组成的一个图像平面传输到个人计算机存储器中，从消除死区时间损失的角度出发，认为每幅图像2秒的相片处理是较好的。在100RGB到450RGB2秒的热释光观测下，最终的摄像机数据数量达到350M字节。通过使用存储器上编译的发光数据，从℃表面图像中选择100个像素，并就各个RGB颜色区域的发光曲线行为进行理想的分析和与其他像素区域的相互比较。结果表明，可以很容易地从数据文件中区分发光差异，例如BTL-石英颗粒和RTL-石英颗粒之间的差异。该系统在土壤来源研究和材料老化引起的介电材料局部晶格缺陷检测方面具有很大的应用前景。较少

项目成果

期刊论文数量（68）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Simultaneous determination of radionuclides belonging to three natural decay series using Time Interval Analysis (TIA)

使用时间间隔分析 (TIA) 同时测定属于三个自然衰变系列的放射性核素

DOI：
发表时间：
2004
期刊：
Analytical and Bioanalytical Chemistry 379
影响因子：
0
作者：
Eri Goto;Miho Usuki;Hiroe Takenaka;Ken Sakai;Tomoaki Tanase;Yasuhiro Takagi;Tetsuo Hashimoto
通讯作者：
Tetsuo Hashimoto

Tetsuo Hashimoto: "An automatic system for both red/blue thermoluminscence (TL) and optically stimulated luminescence (OSL) measurement"J. Nucl. Sci. Technol.. 39. 108-109 (2002)

Tetsuo Hashimoto：“用于红/蓝热释光 (TL) 和光受激发光 (OSL) 测量的自动系统”J.