TSEE, TL AND OPTICAL-PROPERTIES OF LIF SINGLE-CRYSTALS

LiF:Ti,Mg single crystals, of which the Ti content is 100 mumol.mol-1 and Mg concentration varies between 10 and 1000 mumol.mol-1, LiF single crystals (type DTG-4, Russian) and cold pressed LiF prepared from Harshaw TLD-100 powder were studied. TSEE and TL responses after beta or gamma irradiation were subsequently recorded using computer aided photon counting (Daybreak TL), and a multineedle counter type TSEE reader. TL and TSEE glow curves were studied in the temperature range of 50 to 500-degrees-C. The optical absorbance and its dose dependence was measured in the 200-450 nm range. Properties such as TL and TSEE glow peak positions dose responses were determined and analysed. An explanation of probable TL-TSEE correlation is given with a discussion of the applicability of TL-TSEE readings for personal accident dose evaluation.