Open AccessA new quartz for 𝛾-transfer calibration of radiation sources
Author(s) -
Daniel Richter,
Clemens Woda,
K. Dornich
Publication year - 2020
Publication title -
geochronometria
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.626
H-Index - 31
eISSN - 1897-1695
pISSN - 1733-8387
DOI - 10.2478/geochr-2020-0020
Subject(s) - quartz , calibration , dosimetry , monte carlo method , radiation , optically stimulated luminescence , materials science , absorbed dose , thermoluminescence , luminescence , nuclear medicine , mineralogy , optics , radiochemistry , geology , physics , chemistry , composite material , mathematics , statistics , medicine , optoelectronics , quantum mechanics
Quartz grains extracted from aeolian sand ( LexCal2014 ) are tested for suitability as transfer material for radiation source calibration. After thermal pre-treatment, this quartz exhibits luminescence and dose-response properties which appear appropriate for transfer calibration purposes with little dependence of recovered β-dose on preheat temperature in the single aliquot (SAR) procedure and satisfying performance in β-dose recovery (0.98−1.00 given/measured β-dose for various experiments). Additional support is obtained by SARA and interpolation procedures, where OSL-data from γ-dosed LexCal2014 is interpolated on data obtained for zeroed LexCal2014 quartz, which is β-irradiated by the source to be calibrated. Initial results on fine-grain material agree with the coarse grain results presented. The γ-dose of 3.00 ± 0.07 Gy is administered in a scatter-free geometry at the IAEA/WHO Secondary Standard Dosimetry Laboratory (SSDL) of the Helmholtz Zentrum München, with absorbed dose calculations obtained by Monte Carlo simulations.