Effect of heating on the quartz dose-response curve

Citation
G. Chen et al., Effect of heating on the quartz dose-response curve, RADIAT MEAS, 33(1), 2001, pp. 59-63
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
RADIATION MEASUREMENTS
ISSN journal
1350-4487 → ACNP
Volume
33
Issue
1
Year of publication
2001
Pages
59 - 63
Database
ISI
SICI code
1350-4487(200102)33:1<59:EOHOTQ>2.0.ZU;2-0
Abstract
We have investigated the effects of annealing quartz at temperatures up to 1000 degreesC on both the absolute sensitivity and on the growth curve shap e, using quartz extracts from three sedimentary samples from widely separat ed locations. Growth curves up to 670 Gy were measured using the single-ali quot regenerative-dose protocol, which allows all heat treatments and OSL m easurements to be performed on a single sub-sample, with a corresponding im provement in precision when compared with multiple-aliquot protocols. It is found that the degree of dose-dependent sensitivity change is dependent on the annealing temperature. Despite this, and absolute sensitivity changes of more than three orders of magnitude, the growth-curve shape is relativel y independent of annealing temperature, especially at low doses. (C) 2001 E lsevier Science Ltd. All rights reserved.