Influence of Radioluminescence on Optically Stimulated Luminescence from Natural Quartz Grains

Abstract

The causes of the different optically stimulated luminescence (OSL) sensitivities for quartz aliquots from different origins were investigated in terms of radioluminescence (RL) during artificial irradiation. All RL spectra of red-thermoluminescence (RTL) quartz grains consist of two broad RL emission peaks, assignable to a violet region (V-RL, 400 nm) and a red one (R-RL, 630 nm) . The OSL sensitivities were affected on the total amounts of V-RL intensities during irradiation of a fixed total dose (20 Gy) with different dose rates. Additionally, the bleaching effects of RL with shorter wavelength light than OSL-illuminating light (470 nm) were assured from another experiment with the combination of quartz slices and optical filter. Conclusively, it is suggested that the V-RL emissions appreciably affect the residual or naturally accumulated doses when OSL/SAR protocol is applied.