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Gamma‐radiation effects on NaCl:Cu crystals
Author(s) -
CruzZaragoza E.,
Chernov V.,
Meléndrez R.,
BarbozaFlores M.
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200925002
Subject(s) - thermoluminescence , copper , annealing (glass) , analytical chemistry (journal) , irradiation , doping , absorption (acoustics) , ion , radiation , materials science , nuclear chemistry , chemistry , radiochemistry , luminescence , optics , metallurgy , physics , optoelectronics , organic chemistry , chromatography , nuclear physics , composite material
Abstract The γ‐radiation effects on copper‐doped NaCl:Cu crystals were investigated. Single crystals exposed to gamma radiation from 0.001 kGy to 30 kGy at room temperature exhibited optical absorption bands attributed to Cu – (236 nm), Cu + (255 nm) and F (463 nm) centers. The F and Cu absorption annealing bands were correlated to the thermoluminescence (TL) glow‐curve peak structure around 30–165 °C and 215–350 °C, respectively. The TL glow curves of samples doped with 0.04 mol% and 0.08 mol% of Cu + ions showed a strong quenching effect for higher doping concentration. In addition, thermal bleaching of γ‐irradiated specimens confirmed the color centers and Cu‐doping participation on the TL process. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)