Factors controlling the thermoluminescence spectra of rare earth doped calcium fluoride

Y. Wang, Y. Zhao, D. White, A. A. Finch, P. D. Townsend

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)
2 Downloads (Pure)

Abstract

Thermoluminescence spectra of rare earth doped calcium fluoride samples, both powder and single crystal, were recorded over the temperature range from 25 K to 673 K. Although some broad band features exist, the spectra are dominated by the rare earth line transitions. The glow peak temperatures are slightly sensitive both to the ionic size of the dopants and the dopant concentration. By contrast, very considerable differences are generated by heat treatments, such as annealing followed by either fast or slow cooling. Comments are included on the reasons for such sensitivity in terms of association of dopant and intrinsic defect sites and why the results of dosimetry powder differ from those from single crystals.
Original languageEnglish
Pages (from-to)55-63
Number of pages9
JournalJournal of Luminescence
Volume184
Early online date14 Dec 2016
DOIs
Publication statusPublished - Apr 2017

Keywords

  • Thermoluminescence
  • Calcium fluoride
  • Rare earth
  • Ion-size

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