THERMALLY INDUCED CHANGES IN THE TL OF ION IMPLANTED CaF2 - 2.

U. Bangert, K. Thiel, K. Ahmed, P. D. Townsend

Research output: Contribution to journalConference articlepeer-review

Abstract

Thermal treatment of CaF//2 has a significant influence on the number and intensity of the peaks seen by thermoluminescence. A combination of ion implants and anneal cycles leads to the conclusion that the 90 degree C glow peak is derived from a defect of a substitutional trivalent impurity (e. g. , Ce** plus **3) linked to an interstitial fluorine ion. Perturbations of this center by other defects modify the center and the glow peak temperature is raised to 110 degree C. The peaks at 180, 220 and 350 degree C all involve intrinsic defect clusters. The building of models for the different glow peaks was helped by a comparison of impurity and self ion implantations.

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalRadiation effects
Volume64
Issue number1-4
DOIs
Publication statusPublished - 1982

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