ADVANCED RESEARCH OF RADIATION-INDUCED LUMINESCENCE PHENOMENA FROM INORGANIC MATERIALS FROM VIEW POINTS OF ANALYTICAL CHEMISTRY.

首次发现天然石英颗粒的红色热释光现象，从各种辐射致发光（包括光激发光（OSL））的产生原因以及常规二维观测的发展等方面进行了研究。此外，还研究了某些窑址的释光测年和释光在古温度估算中的有效性，并利用X（或γ）射线照射后的色心图像（CCI）和热释光彩色图像（TLCI）对日本产的马达加斯加结晶岩双晶片和石英Z切片进行了观测。结果发现，这些条纹状的辐射诱导图案提供了一个明显的负相关的铝杂质分布从电子探针显微分析仪（EPMA）。在这些条纹图案的基础上，对从切片中获得的一些片段进行了TL和C的更定量的测量 ...更多信息 Cl-滴定法，同时分析了两种杂质：Al-和OH-杂质的浓度。这些分别通过中子活化分析和红外光谱进行了分析。辐射诱导的现象和Al-和OH-（可能是由于悬挂键）杂质浓度之间的逆相关性被发现，而从ESR光谱的Al-中心给出了辐射诱导的现象，是众所周知的正相关性。根据这些实验结果，我们提出了一个模型，在这个模型中，作为OH杂质辐解产物形成的H^0-原子将能够作为辐射诱导现象的杀手。在辐照后的ESR谱和随后在液氮中的测量中检测到H^0自由基和强Al心的存在，而Al心信号的消除，与H^0心的完全消失有关，在加热一次到室温后，从对再冷却样品的ESR测量中得到证实。有趣的是，具有较少辐射诱导现象的部分在退火处理后从原始的蓝色TL位点变成了强烈的红色TL位点，这可能是由于排除了作为水蒸气的OH杂质。少

Red thermoluminscence from natural quartz grains, which has been initially found in the present laboratory., has been searched from aspects of causes as well as development of conventional 2-dimensional observation for a variety of radiation-induced luminescence, including optically stimulated luminescence (OSL). In addition to these, the luminescence dating and the availability of luminescence onto paleotemperature estimation of some kilns have been studied.Japanese twin slices and quartz Z-cut ones, which were prepared from a madagascar crystal rock, were observed with color center images (CCI) and thermoluminescence color imaging (TLCI) after X (or gamma) -ray irradiation. It was found that these striped radiation-induced patterns offered an apparently inverse correlation with Al-impurity distribution from an electron probe micro-analyzer (EPMA). On the basis of these striped patterns, some segments obtained from the slice were subjected to more quantitative measurements of TL and C … More CI spectometry, together with the analysis of the concentrations of two kinds of impurity : Al- and OH-impurities. These were analyzed by means of neutron activation analysis and infra-red spectroscopy, respectively. A reverse-correlation was found between the radiation-induced phenomena and the Al- and OH- (probably due to dangling bonds) impurity concentrations, whereas Al-centers from ESR-specta give a positive correlation with radiation-induced phenomena, as is well known. From these experimental results, a model has been proposed in which the H^0-atoms, formed as a radiolysis product from OH impurities, will be able to operate as killers of radiation-induced phenomena.This model was in consistent with the following results ; the existence of H^0 radicals and intense Al-centers were detected in ESR spectra after the irradiation and subsequent measurements at liquid N_2, whereas the elimination of the Al-center signal, associated with the complete disappearance of the H^0 centers, was confirmed from ESR-measurements on re-cooled samples, after warming once to room temperature. The parts possessing less radiation-induced phenomena were interestingly changed into intense red-TL sites from original blue-TL ones after the annealing treatment, presumably owing to the exclusion of OH impurities as water vapor. Less