Abstract
Overestimation of equivalent dose ( D e ) values due to thermal transfer was observed for quartz when using the single-aliquot regenerative-dose protocol (SAR) to recover a small known dose (1.74 Gy) given after an optical bleach. Both the fast and medium components resulted in overestimation, with the effect being larger for the medium component and the effect could be seen in D e ( t ) plot as stimulation time increased. The dose-generated OSL signal can be distinguished from the thermally transferred signal based on the linear relationship between the initial and final parts of the thermally transferred OSL curves. A method is proposed to correct for thermal-transfer effects using the OSL signals measured in repeated heat/OSL cycles incorporated into the SAR protocol. This approach was applied to artificially irradiated and optically bleached samples, and it was found that the thermal-transfer effects can be removed when using only a single aliquot. In dose recovery tests, the known dose (1.74 Gy) could be obtained using this approach and a value of 0.074 ± 0.026 Gy was obtained for optically bleached aliquots.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.