OSL properties of NaCl relative to dating and dosimetry

摘要

The luminescence properties of NaCl are discussed. Attention is focussed predominantly upon the optically stimulated luminescence (OSL) signal (UV emission) of NaCl (420-560 nm stimulation). The results from experiments relevant to geological dating applications, such as signal resetting, dose response and thermal stability, are described. The behaviour of the OSL signal observed was found to be favourable for dating, with both the thermal stability and dose response suggesting a range of at least 10 ka, Signal resetting via optical exposure was found to be extremely rapid and no evidence of either thermoluminescence or OSL signals was found following recrystallization. The potential for dating natural salt deposits, as Found in various arid environments, appears to be good. (C) 2000 Elsevier Science Ltd. All rights reserved. [References: 8]