Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8249880 | Radiation Measurements | 2018 | 11 Pages |
Abstract
TL glow curves recorded with heating rates in the range 0.02-5â¯Kâ¯sâ1 showed peak positions varying up to 60â¯Â°C between systems at the highest heating rates, attributed to temperature calibration errors and/or thermal lag. Kinetic parameters derived from the complete data set show a large spread, covering the ranges â¼0.5-1.2â¯eV and 106-1017 sâ1 for E and s. In most cases, interlaboratory variations exceeded those of replicate measurements within individual laboratories. Signal lifetimes at 20â¯Â°C derived from the isothermal decay (â¼59â¯min) and initial rise methods (at low heating rates; â¼60-80â¯min) most closely match the value directly measured at 20â¯Â°C from within two luminescence readers (â¼70â¯min). Finally, we discuss the consequences of these findings for dosimetry and dating using luminescence signals and possible ways to reduce systematic errors in laboratory measurements of kinetic parameters.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Christoph Schmidt, Johannes Friedrich, Grzegorz Adamiec, Alicja ChruÅciÅska, Mauro Fasoli, Sebastian Kreutzer, Marco Martini, Laura Panzeri, Georgios S. Polymeris, Krzysztof PrzegiÄtka, Pierre G. Valla, Georgina E. King, David C.W. Sanderson,