Effect of γ‐Irradiation on Eu2+ Ions in KCl Crystals

Halina Opyrchal, K. D. Nierzewski, B. Macalik

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21 Scopus citations

Abstract

Optical absorption and emission, EPR, ITC, and thermoluminescence spectra of RT γ‐irradiated KCl:Eu2+ crystals are examined. ITC and EPR measurements of heavily irradiated samples point to the lack of any I.V. Eu2+ dipoles. Examination of optical properties permits to exclude the presence of Eu+ and Eu3+ ions. On the other hand, the examination of thermal annealing effects in heavily irradiated samples reveals the lack of any correlation between the recovery of original europium dipoles and the decay of colour centres. The results obtained can be understood by assuming radiation field induced aggregation of europium dipoles.

Original languageEnglish (US)
Pages (from-to)429-434
Number of pages6
Journalphysica status solidi (b)
Volume112
Issue number2
DOIs
StatePublished - Jan 1 1982
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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