Jacobs, ZWintle, AGDuller, GAT2007-01-202007-06-072007-01-202007-06-072006-05Jacobs, Z, Wintle, AG and Duller, GAT. 2006. Evaluation of SAR procedures for D-e determination using single aliquots of quartz from two archaeological sites in South Africa. Radiation Measurements, vol 41(5), pp 520-5331350-4487http://hdl.handle.net/10204/1426http://hdl.handle.net/10204/1426In previous work the conventional Single aliquot regenerative protocol procedure has been demonstrated to work well for a large number of samples. Application of the conventional SAR procedure (but with a range of pre-heat temperatures) to naturally irradiated quartz grains from two different archaeological sites in South Africa showed substantial changes in sensitivity through the measurement cycles; one sample (SIB2) showed no trend in D-e as a function of pre-heat temperature, showing that the sensitivity correction was appropriate, whereas for the other sample (ZB4) there was a trend that could be related to the growth curve construction, rather than measurement of the natural signal. However, application of a conventional SAR procedure, with a 260 degrees C preheat for 10s and a cut heat at 160 degrees C, to quartz grains that had been bleached and given a laboratory dose, resulted in underestimation of the dose by grater of equal to 10%. The effect of raising the cut heat temperature from 160 degrees C was investigated using LM-OSL measurements in order to identify OSL components that are present in addition to the fast component for which SAR was developed. The effects of changing the cut heat temperature and adding a high-temperature optical stimulation between cycles in the SAR procedure were measured for dose recovery tests. The effects of these changes on measurement of D-e values for single aliquots of these two samples are reported. Both modifications improved D-e recovery, and the study emphasizes the importance of carrying out dose recovery tests.905984 bytesapplication/pdfenCopyright: 2006 Pergamon-Elsevier Science LtdSingle aliquot regenerative protocolSAR protocolArchaeological sitesPre-heat temperaturesConventional SAR protocolCut heat temperaturesNuclear sciencesTechnologyLinearly modulated OSLLM-OSLOptically stimulated luminescenceArticleJacobs, Z., Wintle, A., & Duller, G. (2006). Evaluation of SAR procedures for D-e determination using single aliquots of quartz from two archaeological sites in South Africa. http://hdl.handle.net/10204/1426Jacobs, Z, AG Wintle, and GAT Duller "Evaluation of SAR procedures for D-e determination using single aliquots of quartz from two archaeological sites in South Africa." (2006) http://hdl.handle.net/10204/1426Jacobs Z, Wintle A, Duller G. Evaluation of SAR procedures for D-e determination using single aliquots of quartz from two archaeological sites in South Africa. 2006; http://hdl.handle.net/10204/1426.TY - Article AU - Jacobs, Z AU - Wintle, AG AU - Duller, GAT AB - In previous work the conventional Single aliquot regenerative protocol procedure has been demonstrated to work well for a large number of samples. Application of the conventional SAR procedure (but with a range of pre-heat temperatures) to naturally irradiated quartz grains from two different archaeological sites in South Africa showed substantial changes in sensitivity through the measurement cycles; one sample (SIB2) showed no trend in D-e as a function of pre-heat temperature, showing that the sensitivity correction was appropriate, whereas for the other sample (ZB4) there was a trend that could be related to the growth curve construction, rather than measurement of the natural signal. However, application of a conventional SAR procedure, with a 260 degrees C preheat for 10s and a cut heat at 160 degrees C, to quartz grains that had been bleached and given a laboratory dose, resulted in underestimation of the dose by grater of equal to 10%. The effect of raising the cut heat temperature from 160 degrees C was investigated using LM-OSL measurements in order to identify OSL components that are present in addition to the fast component for which SAR was developed. The effects of changing the cut heat temperature and adding a high-temperature optical stimulation between cycles in the SAR procedure were measured for dose recovery tests. The effects of these changes on measurement of D-e values for single aliquots of these two samples are reported. Both modifications improved D-e recovery, and the study emphasizes the importance of carrying out dose recovery tests. DA - 2006-05 DB - ResearchSpace DP - CSIR KW - Single aliquot regenerative protocol KW - SAR protocol KW - Archaeological sites KW - Pre-heat temperatures KW - Conventional SAR protocol KW - Cut heat temperatures KW - Nuclear sciences KW - Technology KW - Linearly modulated OSL KW - LM-OSL KW - Optically stimulated luminescence LK - https://researchspace.csir.co.za PY - 2006 SM - 1350-4487 T1 - Evaluation of SAR procedures for D-e determination using single aliquots of quartz from two archaeological sites in South Africa TI - Evaluation of SAR procedures for D-e determination using single aliquots of quartz from two archaeological sites in South Africa UR - http://hdl.handle.net/10204/1426 ER -