Abstract
The blue emission band in thermoluminescence (TL) of natural dolomite has been recorded in the range from room temperature to 400 °C. The natural glow curve has peaks at 240 and 270 °C with a heating rate 4 °C/s. The laboratory induced glow curve has 10 peaks at 145, 155, 175, 200, 225, 240, 270, 300, 340 and 355 °C for an irradiation dose of 10
4 Gy. The thermal activation energies of these defects were estimated by using the initial rise method. The TL response to gamma-rays of post-irradiation heated dolomite was found to be linear over the dose range 500–10
4 Gy.
Fading measurements showed a remnant signal of 0.38 after 21 d of storage in dark at room temperature.