Abstract
The effects of cooling rate following the 400 °C pre-irradiation anneal on the structure of the TL glow-curve of LiF:Mg,Ti and the optical conversion of peak 5a→4 following beta irradiation are investigated in both "slow-cooled" and "naturally-cooled" samples. Computerised glow curve deconvolution is employed with constrained "peak-shape" parameters deduced from anciliary studies using 4 eV and 5 eV optical excitation. It is demonstrated that "slow-cooling" using linear cooling rates of 100 °C/h and 30 °C/h increases the intensity of glow peak 5a and decreases the intensity of peaks 4 and 5 relative to the normal/rapid cooling rates. Serendipitously, the conversion efficiency of peak 5a→4 at a cooling rate of 100 °C/h is found to be ∼ unity indicative of an approximate one-to-one correspondence between the peak 5a and peak 4 configurations.
Original language | English |
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Pages (from-to) | 1406-1409 |
Number of pages | 4 |
Journal | Radiation Measurements |
Volume | 46 |
Issue number | 12 |
DOIs | |
State | Published - 1 Dec 2011 |
Keywords
- Conversion Efficiency
- Cooling Rate
- LiF:Mg,Ti
- Thermoliminescence
ASJC Scopus subject areas
- Radiation
- Instrumentation