Ionisation density effects following optical excitation in LiF:Mg, Ti (TLD-100)

D. Weiss, Y. Horowitz, L. Oster

Research output: Contribution to journalArticlepeer-review

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Abstract

The TL signal following 5 eV photon excitation of previously irradiated and readout material has been studied as a function of ionisation density and various experimental parameters: (i) maximum temperature of the first readout; (ii) photon fluence; (iii) photon energy and (iv) beta ray dose. Following alpha particle irradiation, the ratio of the second-readout to first-readout TL signal, εα, has been found to be 10-20 times higher than that following beta irradiation, indicative of the possibility of using the double ratio εαβ as a mixed-field discriminator. The beginning of an attempt to explain this unusual effect is offered in the framework of the track structure theory and kinetic modelling of the beta ray dose-response of the first and second readouts.

Original languageEnglish
Pages (from-to)206-209
Number of pages4
JournalRadiation Protection Dosimetry
Volume126
Issue number1-4
DOIs
StatePublished - 1 Dec 2007

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