Tthe effect of heating rate on the dose dependence and thermoluminescence characteristic of CaSO4: Dy (TLD-900)

CaSO4:Dy (TLD-900) doped with dysprosium, having an effective number of 15.5, is a solid state dosimeter and it has been used in the investigation for detecting and measuring radiation for the past two decades. In the given study, the effect of heating rate on the dose dependence and thermoluminescence characteristics of TLD-900 has been investigated by using the dose response function f (D) at different linear heating rates between 1 oC/s and 10 oC/s. It is observed that, the peak temperature of the main dosimetric glow peak (P2) shifts to higher temperature sides and the integrated peak area decreases by about 50% as the heating rate increases due to thermal quenching.