eprintid: 124331
rev_number: 34
eprint_status: archive
userid: 608
dir: disk0/00/12/43/31
datestamp: 2010-10-23 19:30:11
lastmod: 2020-05-17 04:41:28
status_changed: 2010-10-23 19:30:11
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Itoh, N
creators_name: Stoneham, D
creators_name: Stoneham, AM
title: The predose effect in thermoluminescent dosimetry
ispublished: pub
subjects: 11050
divisions: UCL
divisions: A01
divisions: B04
divisions: C06
keywords: OPTICALLY STIMULATED LUMINESCENCE, RADIATION-INDUCED CONDUCTIVITY, SINGLE IRRADIATION EXCITATION, CRYSTALLINE SIO2, QUARTZ CRYSTALS, ELECTRODIFFUSED QUARTZ, <SIO4/LI>0 CENTER, NATURAL QUARTZ, POINT-DEFECTS, PEAK
note: Text made available to UCL Discovery by kind permission of IOP Publishing, 2012
abstract: We present a model of the predose effect of thermoluminescence in crystalline quartz in terms of known impurities and defect processes. It involves the recombination-induced dissociation of an aluminium-alkali complex [Al M+] and the reaction of an alkali [M+] with an activator [X], possibly Ge, to make the former an efficient electron trap [XM+]. This excitation-induced ionic process is a new feature, in addition to the simple carrier redistribution processes usually assumed, and is consistent with a number of experiments. The test dose detects [X M+], which is present in a concentration within the dynamic range of thermoluminescence measurements. Our model enables us to understand the enhanced sensitivity of the predose method, which has been widely used in archaeological and accident dosimetry, and to link it to established impurity and defect centres in alpha -quartz.
date: 2001-03-12
publisher: IOP PUBLISHING LTD
official_url: http://dx.doi.org/10.1088/0953-8984/13/10/314
vfaculties: VMPS
oa_status: green
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_manual
doi: 10.1088/0953-8984/13/10/314
language_elements: EN
lyricists_name: STONEHAM, ARTHUR
lyricists_id: AMSTO63
full_text_status: public
publication: J PHYS-CONDENS MAT
volume: 13
number: 10
pagerange: 2201 - 2209
issn: 0953-8984
citation:        Itoh, N;    Stoneham, D;    Stoneham, AM;      (2001)    The predose effect in thermoluminescent dosimetry.                   J PHYS-CONDENS MAT , 13  (10)   2201 - 2209.    10.1088/0953-8984/13/10/314 <https://doi.org/10.1088/0953-8984%2F13%2F10%2F314>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/124331/1/0953-8984_13_10_314.pdf