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Effects of Bi 3+ codoping on the optical and scintillation properties of CsI:Tl single crystals
Author(s) -
Wu Yuntao,
Ren Guohao,
Meng Fang,
Chen Xiaofeng,
Ding Dongzhou,
Li Huanyin,
Pan Shangke
Publication year - 2014
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.201431299
Subject(s) - radioluminescence , scintillation , afterglow , ion , yield (engineering) , materials science , scintillator , analytical chemistry (journal) , atomic physics , optics , chemistry , physics , detector , gamma ray burst , metallurgy , organic chemistry , chromatography , astronomy
CsI:Tl single crystals with different Bi 3+ concentrations from zero to 0.05 mol% were grown by the vertical Bridgman technique. The effects of Bi 3+ codoping on the scintillation properties of CsI:Tl single crystals were investigated, including afterglow level, relative light yield, energy resolution, scintillation decay time and radioluminescence spectra. Afterglow suppression by Bi 3+ codoping was confirmed, but it resulted in a considerable decrease of light yield and energy resolution. The deterioration of light yield was ascribed to the self‐absorption effect induced by Bi 3+ ions. The physical mechanism and role of Bi 3+ ions in afterglow suppression were proposed.