Charge Traps in Ce-Doped CaF2 and BaF2
W. Drozdowskia, K.R. Przegiętkaa, A.J. Wojtowicza,b, and H.L. Oczkowskia
a Institute of Physics, Nicholas Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland,
b Chemistry Department, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA
Received: August 2, 1998
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Thermoluminescence of CaF2:Ce, BaF2, and BaF2:Ce irradiated at room temperature is reported. X-ray induced emission spectra of the samples show that both excitonic (due to e-+VK recombination) and Ce3+ d-f luminescence may contribute to thermoluminescence signal. The simple Randall-Wilkins model is used to deconvolute glow curves into seven to eight first-order peaks. Parameters of all traps are calculated and correlations between peaks in the curves of the examined materials are discussed.
DOI: 10.12693/APhysPolA.95.251
PACS numbers: 78.60.Kn, 73.50.Gr, 29.40.Mc