Activation energy was experimentally determined using the curve-fitting, initial-rise and the peak-shape methods involving
pulse annealing experiments in NaCl samples irradiated at 10, 20, 30 and 40 Gy beta-doses and infrared stimulated luminescence
(IRSL) signal at a temperature range of 100-300 °C. It was observed that the activation energy for NaCl decreases as the dose
increased. The results were compared to other studies and discussed.