Nordic laboratory for luminescence dating
Buylaert , but there is little information on the performance of the single-aliquot regeneration-dose (SAR) measurement protocol (Murray and Wintle, 2000) on the p IRIR signal from rock slices. Sample preparation and luminescence signal measurements were carried out at the Institute of Geology (China Earthquake Administration, China) and at the Nordic Laboratory for Luminescence Dating, Aarhus University, Denmark and Center for Nuclear Technologies (DTU Nutech), Technical University of Denmark.
There is at present no practical way of separating pure minerals (quartz and feldspar) from hard rocks for OSL measurement without losing the grain-size dependent dosimetric information and there is little information about the performance of the single-aliquot regeneration-dose (SAR) measurement protocol on the post-infrared infrared stimulated luminescence (p IRIR) signals from rock slices. Our data indicate that there is a systematic increase in dose response curve saturation (or ) with test dose size when the regeneration doses are first given in increasing order, and then decreasing order.The most important of these sources are radioactive isotopes of uranium (U), thorium (Th) and potassium (K).Once the concentrations of these three elements are known, conversion factors enable the calculation of the radiation dose rate (Adamiec and Aitken 1998).The calculated age is the time since the last exposure to sunlight or intense heat.The sunlight bleaches away the luminescence signal and resets the time 'clock'.