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Optically stimulated luminescence in LiCaAlF 6 :Eu 2+ phosphor
Author(s) -
More Y. K.,
Wankhede S. P.,
Moharil S. V.,
Kumar Munish,
Chougaonkar M. P.
Publication year - 2015
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2836
Subject(s) - phosphor , thermoluminescence , optically stimulated luminescence , thermoluminescent dosimeter , luminescence , lithium fluoride , photoluminescence , materials science , lithium (medication) , dosimetry , ultraviolet , magnesium , radiochemistry , analytical chemistry (journal) , chemistry , optoelectronics , nuclear medicine , inorganic chemistry , dosimeter , medicine , chromatography , endocrinology , metallurgy
Results on optically stimulated luminescence (OSL) in LiCaAlF 6 :Eu 2+ are reported. Continuous wave OSL signal as recorded using blue (470 nm) stimulation was found to be ~31% that of standard phosphor lithium magnesium phosphate. The rate of OSL depletion for standard phosphor lithium magnesium phosphate is only three times less as compared with that of LiCaAlF 6 :Eu 2+ . Strong photoluminescence (PL) in the near ultraviolet region is observed for LiCaAlF 6 :Eu 2+ with the characteristic Eu 2+ emission at 369 nm for 254 nm excitation. The thermoluminescence (TL) glow peak for LiCaAlF 6 :Eu 2+ was observed at around 180°C. The glow peak was about six times more intense compared with the dosimetric peak of the well known thermoluminescence dosimetric (TLD) phosphor LiF‐TLD 100. Thus this phosphor deserves much more attention than it has received until now and may be useful as a dosimetric material in radiation dosimetry. Copyright © 2015 John Wiley & Sons, Ltd.