KCl: Eu2+ as a solar UV-C radiation dosimeter. Optically stimulated luminescence and thermoluminescence analyses

I. Aguirre de Cárcer*, H. L. Dántoni, M. Barboza-Flores, V. Correcher, F. Jaque

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The KCl:Eu2+ system response to UV-C was investigated by analyzing the optically stimulated luminescence (OSL) and thermo-luminescence (TL) signal produced by ultraviolet light exposure at room temperature. It was found that after UV-C irradiation, OSL was produced on a wide band of visible wavelengths with decay time that varied by several orders of magnitude depending on the Eu2+ aggregation state. In spite of the low intensity of solar UV-C reaching the Earth's surface in Madrid (40o N, 700 m a.s.l.), it was possible to measure the UV-C radiation dose at 6:48 solar time by using the TL response of the KCl:Eu2+ system and differentiate it from the ambient beta radiation dose.

Original languageEnglish
Pages (from-to)579-583
Number of pages5
JournalJournal of Rare Earths
Volume27
Issue number4
DOIs
StatePublished - Aug 2009

Keywords

  • environmental radiation
  • rare-earth-doped alkali halides
  • solar ultraviolet dosimeter
  • thermo-luminescence

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