The predose effect in thermoluminescent dosimetry

被引:29
作者
Itoh, N
Stoneham, D
Stoneham, AM
机构
[1] UCL, Ctr Mat Res, London WC1E 6BT, England
[2] UCL, Dept Phys & Astron, London WC1E 6BT, England
关键词
D O I
10.1088/0953-8984/13/10/314
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
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.
引用
收藏
页码:2201 / 2209
页数:9
相关论文
共 41 条
[1]  
Aitken M.J., 1985, Thermoluminescence Dating
[2]   X-RAY-INDUCED LUMINESCENCE IN CRYSTALLINE SIO2 [J].
ALONSO, PJ ;
HALLIBURTON, LE ;
KOHNKE, EE ;
BOSSOLI, RB .
JOURNAL OF APPLIED PHYSICS, 1983, 54 (09) :5369-5375
[3]  
[Anonymous], 1980, J PHYS C SOLID STATE, DOI DOI 10.1051/JPHYSCOL:1980691
[4]   THE PREDOSE TECHNIQUE [J].
BAILIFF, IK .
RADIATION MEASUREMENTS, 1994, 23 (2-3) :471-479
[5]   The development of retrospective luminescence dosimetry for dose reconstruction in areas downwind of Chernobyl [J].
Bailiff, IK .
RADIATION PROTECTION DOSIMETRY, 1999, 84 (1-4) :411-419
[6]   THE USE OF CERAMICS FOR RETROSPECTIVE DOSIMETRY IN THE CHERNOBYL EXCLUSION ZONE [J].
BAILIFF, IK .
RADIATION MEASUREMENTS, 1995, 24 (04) :507-511
[7]  
BAILIFF IK, 1991, SCI DATING METHODS, P155
[8]   Studies of quartz 110 °C thermoluminescence peak sensitivity change and its relevance to optically stimulated luminescence dating [J].
Chen, G ;
Li, SH .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2000, 33 (04) :437-443
[9]  
Fleming S.J., 1979, THERMOLUMINESCENCE T
[10]   QUARTZ AS A HEAT-RESISTANT DOSIMETER [J].
FLEMING, SJ ;
THOMPSON, J .
HEALTH PHYSICS, 1970, 18 (05) :567-+