Afterglow suppression by codoping with Bi in CsI:TI crystal scintillator

Daisuke Totsuka, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Federico Moretti, Anna Vedda, Akira Yoshikawa

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30 Citations (Scopus)


Single crystals of Csl, CsI:TI, and CsI:TI, Bi were grown by the vertical Bridgman method. We studied the effect of Bi 3+ codoping on the CsI:TI X-ray-induced afterglow. Thermally stimulated luminescence measurements were carried out in order to investigate the role of traps. The results showed a remarkable reduction of afterglow, of about an order of magnitude, and of trap concentration by Bi codoping. These improvements could be related to a possible role of Bi in the compensation of intrinsic nonstoichiometry defects.

Original languageEnglish
Article number052601
JournalApplied Physics Express
Issue number5
Publication statusPublished - 2012 May


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