Abstract
Thermoluminescence of aquamarine, the cyan variety of beryl (Be3Al2(SiO3)6), is reported. Samples were irradiated at room temperature using a 90Sr/90Y β source at a rate of 0.10 Gys–1. Measurements made at 1 °C/s after irradiation to 10 Gy show a prominent glow peak at 75 °C and three secondary peaks at 113, 188 and 306 °C. Kinetic analysis of the main peak performed using the initial rise, whole glow peak and curve fitting methods show that the peak follows first order kinetics, that its activation energy is of the order of 1 eV and that it has a frequency factor of ∼1012 s−1. Reproducibility analysis shows that the material reproduces its response under identical experimental conditions with a maximum uncertainty of 2.0%.
Published Version
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