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Influence of dopants and preparation method on the thermoluminescence properties of corundum crystals
Author(s) -
Kvapil Jiři,
Vitamvás Z.,
Perner B.,
Kvapil Jos.,
Mánek B.,
Adametz O.,
Kubelka J.
Publication year - 1980
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19800150720
Subject(s) - corundum , thermoluminescence , materials science , dopant , doping , analytical chemistry (journal) , hydrogen , oxygen , mineralogy , nuclear chemistry , luminescence , chemistry , metallurgy , optoelectronics , chromatography , organic chemistry
Thermoluminescence (TL) of several types of corundum crystals is described. Undoped crystals showed a weak TL at 15 and 110°C with emission at 330 and 495 nm. Good TL response at 275°C is shown by Cr doped (0.03 wt%) crystals grown by Verneuil method in the oxygen cone of the flame annealed in hydrogen at 1500–1800°C. The most intensive TL response is shown by crystals doped with Ti and Mo (∼ 10 −3 wt.%) grown by Czochralski method in reducing conditions. The former may be used to the detection of γ‐rays dose ≥ 10 −3 − 10 −2 Gy, the latter ≥ 10 −7 − 10 −6 Gy.