Abstract
A kinetic model combining both localized and delocalized recombination is described which is based on different filling rates as a function of irradiation electron energy of a spatially correlated trapping center/luminescent center (TC/LC) complex. Following irradiation and thermal de-trapping the locally trapped electron-hole configuration is assumed to give rise to peak 5a and the e-only configuration to peak 5 in the glow curve of LiF:Mg,Ti (TLD-100). The model is capable of simulating the linear/supralinear dose response of composite peak 5, the dependence of the supralinearity on photon energy and the ratio of the intensities of peak 5a to peak 5 as a function of dose. However, this is achieved only by invoking the presence of band-tail states which allow thermally induced hopping leading to semi-localized recombination in the recombination mechanism of the e-only configuration.
Original language | English |
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Pages (from-to) | 226-231 |
Number of pages | 6 |
Journal | Radiation Measurements |
Volume | 71 |
DOIs | |
State | Published - 1 Jan 2014 |
Keywords
- Delocalized recombination
- Dose response
- Ionization density
- Localized recombination
- Thermoluminescence
ASJC Scopus subject areas
- Radiation
- Instrumentation