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

D. Weiss; Y. Horowitz; L. Oster

doi:10.1093/rpd/ncm043

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

D. Weiss, Y. Horowitz, L. Oster

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

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, ε_α, has been found to be 10-20 times higher than that following beta irradiation, indicative of the possibility of using the double ratio ε_α/ε_β 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 language	English
Pages (from-to)	206-209
Number of pages	4
Journal	Radiation Protection Dosimetry
Volume	126
Issue number	1-4
DOIs	https://doi.org/10.1093/rpd/ncm043
State	Published - 1 Dec 2007

ASJC Scopus subject areas

Radiological and Ultrasound Technology
Radiation
Radiology Nuclear Medicine and imaging
Public Health, Environmental and Occupational Health

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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 εα/εβ 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.",

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AU - Horowitz, Y.

AU - Oster, L.

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Y1 - 2007/12/1

N2 - 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 εα/εβ 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.

AB - 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 εα/εβ 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.

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ER -

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

Abstract

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