Influence of color centers on the luminescent response of radiation-damaged CsI

Tl crystal

V. Yakovlev, L. Trefilova, V. Alekseev, A. Karnaukhova, O. Shpylynska, A. Lebedynskiy, O. Tarakhno

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Luminescence properties of Tl0va + and Tl2+vc - color centers induced by irradiation in CsI:Tl crystal are studied within a temperature range of 80-300 K. It is found, that electron Tl0va + and hole Tl2+vc - color centers arising due to radiation damage do not reduce conversion efficiency of CsI:Tl crystal, but participate in scintillation process to get energy from Tl+ centers by resonance. Degradation of the light yield of the irradiated CsI:Tl crystal is caused by the radiative energy transfer from Tl+ to Tl0va + centers, whose emission is quenched at temperature above 210 K. Non-radiative energy transfer from Tl+ to Tl2+vc - centers results in long-wave spectral shift and the duration increase of the scintillation pulse.

Original languageEnglish
Pages (from-to)13-20
Number of pages8
JournalFunctional Materials
Volume25
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

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Color centers
Scintillation
Radiation
Energy transfer
Crystals
Radiation damage
Conversion efficiency
Luminescence
Irradiation
Degradation
Temperature
Electrons

Keywords

  • Color center
  • Energy transfer
  • Luminescence
  • Radiation damage
  • Thallium doped cesium iodide

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Influence of color centers on the luminescent response of radiation-damaged CsI : Tl crystal. / Yakovlev, V.; Trefilova, L.; Alekseev, V.; Karnaukhova, A.; Shpylynska, O.; Lebedynskiy, A.; Tarakhno, O.

In: Functional Materials, Vol. 25, No. 1, 01.01.2018, p. 13-20.

Research output: Contribution to journalArticle

Yakovlev, V. ; Trefilova, L. ; Alekseev, V. ; Karnaukhova, A. ; Shpylynska, O. ; Lebedynskiy, A. ; Tarakhno, O. / Influence of color centers on the luminescent response of radiation-damaged CsI : Tl crystal. In: Functional Materials. 2018 ; Vol. 25, No. 1. pp. 13-20.
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AU - Lebedynskiy, A.

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