Reusability and fractional read-out in CaF2:Tm (TLD-300)

The first part of this paper is concerned with the reusability of CaF2:Tm (TLD-300) ribbon without thermal treatment between read-out and irradiation. It has been checked up to a dose level of about 200 mGy and the results show that it is possible to reuse this material without annealing in the used dose range. In the second part of the paper a fractional method of TL readings is outlined. The peak separation is checked at different linear testing rates and with different reading times for each peak. The separation technique is then checked in a dose accumulation experiment. (author)