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Thermoluminescence features of alumina‐mixed borophosphate glasses with Tb 3+ ions for dosimetric applications
Author(s) -
Kalpana Tirumalasetti,
Sanyal Bhaskar,
Gandhi Yerramreddy,
Ravi Kumar Vandana,
Baskaran Gnanamuthu S.,
Bragiel Piotr,
Piasecki Michal,
Veeraiah Nalluri
Publication year - 2017
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12223
Subject(s) - thermoluminescence , materials science , barium , amorphous solid , terbium , ion , irradiation , doping , analytical chemistry (journal) , quenching (fluorescence) , radiochemistry , dosimetry , range (aeronautics) , nuclear chemistry , luminescence , crystallography , fluorescence , optics , chemistry , nuclear medicine , optoelectronics , metallurgy , nuclear physics , chromatography , composite material , physics , organic chemistry , medicine
Amorphous barium borophosphate materials doped with small quantity of terbium ions and with the addition of some amounts of alumina were prepared. Thermoluminescence ( TL ) characteristics of these glasses were investigated after irradiating them with different doses of γ‐rays (in the range 0.5‐8.0 kG y). The TL emission exhibited a dosimetric peak at about 210°C. The TL output under this glow peak is observed to increase with the γ‐ray dose. For any fixed γ‐ray dose, the TL output is increased with increase in Al 2 O 3 content up to 3.0 mol%, and beyond this concentration, quenching of TL is visualized. The dose response of TL output of these glasses exhibited linear behavior in the dose range 0.5‐4.0 kG y. The mechanisms responsible for TL emission and the variation of TL output with the concentration of Al 2 O 3 are quantitatively discussed in terms of structural defects induced during γ‐ray irradiation. Finally, it is concluded that these glasses are potential materials for dosimetry applications in the dose range 0.5‐4.0 kG y.