Comparison and further improvement of some luminescence dating methods using heating and light-illuminating excitation

采用单等分再生剂量法（SAR）实现了可靠的热释光（TL）和光激发发光（OSL）测年方法，从对少量样品等分的要求上优于多等分加性剂量法（MAAD）。在SAR测量中，在固定几何条件下由人工辐射源进行多次重复的发光测量和人工给药。由于日本对放射性同位素（RI）源（40 ~ 50 mCi）存在严重的限制，因此在我们的实验室中，通过配备小型或微型x射线发生器的自动发光测量仪建立了这样的实验条件。该系统不仅适用于BTL和OSL，而且适用于RTL的SAR自动发光测量系统。该系统的特点包括一组陶瓷加热器和一个玻璃芯棒作为有效的发光检测。更重要的是，研究人员利用自动发光测量系统，从推测使用于3500 - 6000年前的9件绳纹陶器中提取石英和长石，进行了包括RTL、BTL、OSL和IRSL（红外激发发光）在内的4种发光测量。在这些结果的基础上，将使用累积剂量和年剂量计算的rtl年龄与其他ls和irsl年龄进行比较。结果表明，当考古材料中有石英提取物时，rtl测年法是最可靠的测年方法。最近，类似的RTL测年方法也被应用于较早被烧毁的考古材料，如屋顶瓦片（寺）和古窑石（埼玉和北海道）。结合电子自旋共振（ESR）光谱法，从液氮温度至0℃低温区tl -glow曲线的基本性质搜索，探讨了先进的发光测年方法。结果表明，石英试样中的Al和OH杂质以及热退火温度和冷却速率对试样的tl性能有显著影响。少

The reliable TL (thermoluminescence) and OSL (optically stimulated luminescence)-dating methods are realized using a single aliquot regenerative dose (SAR) method which is superior to a multiple aliquots additive dose (MAAD) method from aspect of requirement of a few of sample aliquots. In the SAR measurement, several repetitions of the luminescence measurements and artificial dosing under a fixed geometrical condition by an artificial radiation source. Such experimental conditions have been established by an automated luminescence measuring apparatus equipped with a small or a mini X-ray generator in our laboratory, because a serious limitation exists in Japan for a radioactive isotope (RI) source (amounting to 40〜50 mCi). The new automated luminescence measuring system which is applicable not only to BTL and OSL but also to RTL using the SAR method. The features of this system contain a cluster of ceramics heaters, and a glass core-rod as an effective luminescence detection. Practica … More lly, quartz and feldspar extracts, from nine Jomon pottery pieces, which were assumed to be used 3,500-6,000 years ago, were followed to four kinds of luminescence measurements, involving RTL, BTL, OSL, and IRSL (infrared stimulated luminescence), using the automated luminescence measuring system. On these results, the RTL-ages, calculated using the accumulated doses and annual doses were compared with other OSL-and IRSL-ages. Conclusively, the RTL-dating was confirmed to be most reliable dating-method when quartz extracts from burnt archaeological materials are available. Recently, the similar RTL dating was satisfactorily applied for younger burnt archaeological materials such as the roof tile pieces (Sairyuuji temple) and stones of ancient kiln (Saitama and Hokkaido). An advanced luminescence dating was approached from basic property search of TL-glowcurve in lower temperature region from liquid nitrogen temperature up to 0 ℃, combined with electron spin resonance (ESR) spectrometry. As a result, Al and OH impurities in quartz specimens were found to affect remarkably the TL-properties together with thermal annealing temperature and cooling rate. Less