Photo- and radiation-stimulated processes in CsI(Tl) crystals

L. Trefilova, B. Grinyov, V. Alekseev, A. Mitichkin, V. Yu Yakovlev, A. Meleshko

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The process of radiation-chemical coloration of CsI(Tl) crystals with different carbonate ion contamination has been studied. The presence of carbonate in the CsI(Tl) crystals deteriorates their photo- and radiation stability. Possible reasons for the charge carrier derealization in CsI(Tl) crystals under exposure to daylight and a role of oxygen-containing impurities in the formation of stable radiation defects have been established. A model of the hole activator color center is suggested. According to the model, the Tl2+ vc - center is a Tl2+ hole activator center perturbed by a cation vacancy. The electron color centers Tl0va + are stabilized not only by the hole color centers of Tl2+ vc - and I 3 -, but also by the molecular anions of HCO 3 - and CO3 - formed as a result of the photo- and radio-chemical transformation of CO3 2- and OH- ions.

Original languageEnglish
Article number4545222
Pages (from-to)1263-1269
Number of pages7
JournalIEEE Transactions on Nuclear Science
Volume55
Issue number3
DOIs
Publication statusPublished - Jun 2008

Keywords

  • Cesium compounds
  • Infrared spectroscopy
  • Photochromism
  • Radiation effects

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Nuclear Energy and Engineering

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