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EPR characterization in natural quartz samples of a newly discovered hydrogen related defect and already known germanium related defects
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SYSNO ASEP 0550019 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title EPR characterization in natural quartz samples of a newly discovered hydrogen related defect and already known germanium related defects Author(s) Monti, A.M. (IT)
Buryi, Maksym (FZU-D) RID, ORCID
Fasoli, M. (IT)
Martini, M. (IT)Number of authors 4 Article number 106604 Source Title Radiation Measurements. - : Elsevier - ISSN 1350-4487
Roč. 145, Jul. (2021)Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords quartz ; electron paramagnetic resonance ; germanium related centres ; hydrogen ; thermal stability Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000667216200004 EID SCOPUS 85108120589 DOI 10.1016/j.radmeas.2021.106604 Annotation The role of hydrogen in the formation and modification of defects in quartz is well known, but still to be clarified is its involvement in trapping and recombination properties of quartz on which its dating characteristics are based. We performed simulations to extrapolate the g-factors and coupling constants of the observed components. We carried out pulse annealing experiments to determine the trap depth of the centres originating such signals. The hydrogen related centre signal has been simulated with the g-tensor’s main components being g1 = 2.0007, g2 = 1.9974 and g3 = 1.9929, with coupling constants A1 = 233 MHz, A2 = 235 MHz and A3 = 239 MHz, and trap depth of 1.14 eV. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1016/j.radmeas.2021.106604
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