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 journalArticle

6 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

Fingerprint

Color centers
color centers
Radiation
Crystals
Carbonates
carbonates
radiation
crystals
Ions
Charge carriers
Vacancies
charge carriers
ions
contamination
Contamination
Negative ions
Positive ions
Impurities
anions
color

Keywords

  • Cesium compounds
  • Infrared spectroscopy
  • Photochromism
  • Radiation effects

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Nuclear Energy and Engineering

Cite this

Photo- and radiation-stimulated processes in CsI(Tl) crystals. / Trefilova, L.; Grinyov, B.; Alekseev, V.; Mitichkin, A.; Yakovlev, V. Yu; Meleshko, A.

In: IEEE Transactions on Nuclear Science, Vol. 55, No. 3, 4545222, 06.2008, p. 1263-1269.

Research output: Contribution to journalArticle

Trefilova, L. ; Grinyov, B. ; Alekseev, V. ; Mitichkin, A. ; Yakovlev, V. Yu ; Meleshko, A. / Photo- and radiation-stimulated processes in CsI(Tl) crystals. In: IEEE Transactions on Nuclear Science. 2008 ; Vol. 55, No. 3. pp. 1263-1269.
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