STUDY OF SENSITIVITY CHANGE OF OSL SIGNALS FROM QUARTZ AND FELDSPARS AS A FUNCTION OF PREHEAT TEMPERATURE

被引：6
作者：
JUNGNER, H [1 ]
BOTTERJENSEN, L [1 ]
机构：
[1] RISO NATL LAB,DK-4000 ROSKILDE,DENMARK
来源：
RADIATION MEASUREMENTS | 1994年 / 23卷 / 2-3期
关键词：
D O I：
10.1016/1350-4487(94)90110-4
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Optically stimulated luminescence (OSL) signals from feldspar and quartz samples were studied using infrared (860 nm) and green light (420-575 nm) stimulation. A serious problem connected with the regeneration technique used for dating is associated with a change of OSL sensitivity to radiation in the couse of the measurement process. A typical effect seen is a large increase of the apparent strength of our beta source when calibrated against a gamma source. If the regeneration procedure is used, it is shown that the sensitivity increases up to similar to 50% during the measurement process and as a result, the equivalent dose (ED) would be underestimated. A study of sensitivity changes in feldspars and quartz was carried out with emphasis on the effect of preheat and annealing on the OSL signal. Measurement results obtained are presented, and possible elimination of errors in dating caused by sensitivity changes is discussed.
引用
收藏
页码：621 / 624
页数：4
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