Thermoluminescence (TL) measurements were performed in crystal samples
of alpha-Al2O3 (TLD 500 K) subjected to UV irradiation in the range o
f 200-320 nm. The material is very sensitive to UV light and can be co
nsidered potentially useful for actinic region dosimetry. The TL glow
curve is composed of two glow peaks centered at 58 and 184-degrees-C,
respectively. The TL excitation spectrum shows a maximum for 220 nm li
ght.