An investigation of the dosimetric and kinetic properties of sand using ESR and TL techniques.

摘要: Abstract In this research, the general dosimetric and kinetic properties of sand from a beach in southern Turkey were investigated using electron spin resonance (ESR) thermoluminescence (TL) techniques. The ESR dose response curve presents linear behaviour range 250–1000 Gy followed by sublinear 2–8 kGy. Kinetic behaviors activation energy free radical also calculated data obtained annealing studies performed at four different temperatures (220, 240, 260 280 °C). value was as 1.47 eV. long-term fading signal room temperature turned out to be best described second-order decay function. presence measurable intensity even after storage period 90 days considered providing an opportunity estimation irradiated sample. Although TL glow natural (unirradiated) sample only has single broad peak 317 °C, peaks located ~115 °C, ~156 °C, ~231 °C ~308 °C their tends increased with absorbed dose. T m x − s t o p fitting results showed that least five ∼116 °C, 149 °C, 228 °C, 306 °C 360 °C. This result suggests apparently D may consist two or more overlapping peaks. According thermal temperature, intensities (23 °C 308 °C) found quite large 30 allows accurate measurement intensity. additive method, variable heating rate method (VHRM), used number peaks, parameters. study shows techniques could successfully investigate kinetics Furthermore, plus previous work done authors suggest could, techniques, suitable material for alternative measurement.