X-ray luminescence of BaF2:Ce3+ powders
Аннотация
We studied the mechanism for the formation of cerium-activated barium fluoride scintillation ceramics and especially X-ray luminescence of its powdered precursors, prepared by co-precipitation of barium and cerium fluorides from aqueous solutions. We have found that the Ce3+ luminescence, which is typical for cerium (III)-containing ceramics and single crystals, was not observed for such polycrystalline precursors, and the intensity of barium fluoride’s own luminescence decreases with increasing amounts of the cerium dopant in the specimens. We have interpreted our results as two-phase precipitation of barium hydrofluoride (BaF2·HF) and cerium fluoride, respectively. Cerium (III) became incorporated in fluorite-type barium fluoride lattice only later, in the course of ceramics synthesis by the hot-pressing technique.
При поддержке: This work was supported by the Scholarship of the President of Russian Federation (SP-6467.2013.2) and RFBR grant No. 13-02-12162-ofi-m. Authors thank V. V. Voronov and R. P. Ermakov for their help with X-ray diffraction experiments
Об авторах
S. Kh. Batygov
Russian Academy of Sciences
Россия
Россия
A. M. Prokhorov General Physics Institute
Moscow
M. N. Mayakova
Russian Academy of Sciences
Россия
Россия
A. M. Prokhorov General Physics Institute
Moscow
S. V. Kuznetsov
Russian Academy of Sciences
Россия
Россия
A. M. Prokhorov General Physics Institute
Moscow
P. P. Fedorov
Russian Academy of Sciences
Россия
Россия
A. M. Prokhorov General Physics Institute
Moscow
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Рецензия
Для цитирования:
Batygov S.Kh., Mayakova M.N., Kuznetsov S.V., Fedorov P.P. X-ray luminescence of BaF2:Ce3+ powders. Наносистемы: физика, химия, математика. 2014;5(6):752-756.
For citation:
Batygov S.Kh., Mayakova M.N., Kuznetsov S.V., Fedorov P.P. X-ray luminescence of BaF2:Ce3+ powders. Nanosystems: Physics, Chemistry, Mathematics. 2014;5(6):752-756.
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