Ionisation density effects following optical excitation in LiF:Mg, Ti (TLD-100)
Copyright policy )Ionisation density effects following optical excitation in LiF:Mg, Ti (TLD-100)
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, epsilon(alpha,) has been found to be 10-20 times higher than that following beta irradiation, indicative of the possibility of using the double ratio epsilon(alpha)/epsilon(beta) 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.
Ions, Neutrons, Light, Reproducibility of Results, Dose-Response Relationship, Radiation, Equipment Design, Radiation Dosage, Sensitivity and Specificity, Equipment Failure Analysis, Fluorides, Lithium Compounds, Artifacts, Radiometry
Ions, Neutrons, Light, Reproducibility of Results, Dose-Response Relationship, Radiation, Equipment Design, Radiation Dosage, Sensitivity and Specificity, Equipment Failure Analysis, Fluorides, Lithium Compounds, Artifacts, Radiometry
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