Effects of thermal treatment on the growth curve shape for OSL of quartz extracted from Chinese loess

被引：34

作者：

Lai, ZhongPing ^{[1
,2
]}

Brueckner, Helmut ^{[2
]}

Fuelling, Alexander ^{[2
]}

Zoeller, Ludwig ^{[3
]}

机构：

[1] Chinese Acad Sci, QingHai Inst Salt Lakes, Luminescence Dating Lab, Xining 810008, Peoples R China

[2] Univ Marburg, Fac Geog, D-35032 Marburg, Germany

[3] Univ Bayreuth, Geomorphol Grp, D-95440 Bayreuth, Germany

来源：

RADIATION MEASUREMENTS | 2008年 / 43卷 / 2-6期

关键词：

luminescence; thermal treatment; growth curve saturation; quartz OSL; Chinese loess;

D O I：

10.1016/j.radmeas.2008.01.023

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：

The purpose of the present work is to examine the effect of heating (up to 500 degrees C) on the shape of a growth curve for optically stimulated luminescence (OSL) of quartz extracted from Chinese loess. For OSL of natural quartz grains, the growth curve constructed using a single aliquot regenerative-dose (SAR) protocol has a linear growth part in the high dose range of > 200 Gy, which may allow the determination of a D-e to > 400 Gy and also implies that the OSL has contribution from more than a single trap/luminescence combination centre. When quartz grains are heated to a temperature of > 360 degrees C, the shape of a growth curve will change, and the saturation level of a growth curve is decreasing systematically. The significant difference in the growth curve shape before and after heating to > 370 degrees C might be used as an indicator to detect the thermal history, i.e. whether the quartz grains had undergone a heating event of > 370 degrees C before deposition. This has potential application for archaeological samples. The effect of heating on OSL sensitivity is also examined. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：763 / 766

页数：4

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