The Role of Vacancies in the Thermoluminescence of LiF:Ti and CaSO4:Dy
- 1 December 1986
- journal article
- Published by Oxford University Press (OUP) in Radiation Protection Dosimetry
- Vol. 17 (1-4) , 451-454
- https://doi.org/10.1093/oxfordjournals.rpd.a079858
Abstract
Since the main thermoluminescent (TL) glow peak (250 oC) and F-band optical absorption in LiF:Ti crystals are found to be almost absent after gamma ray irradiation at -196 oC, we propose that the main glow peak results from interstitial vacancy recombination. Additional doping of CaSO4:Dy with either Li+ (or Na+) brought about drastic reduction in 225 oC as well as 375 oC TL peaks. This indicates that Ca2+ vacancies are involved in the formation of traps giving rise to these TL peaks.Keywords
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