EPR characterization in natural quartz samples of a newly discovered hydrogen related defect and already known germanium related defects

0550019 - FZÚ 2022 RIV GB eng J - Journal Article
Monti, A.M. - Buryi, Maksym - Fasoli, M. - Martini, M.
EPR characterization in natural quartz samples of a newly discovered hydrogen related defect and already known germanium related defects.
Radiation Measurements. Roč. 145, Jul. (2021), č. článku 106604. ISSN 1350-4487. E-ISSN 1879-0925
Institutional support: RVO:68378271
Keywords : quartz * electron paramagnetic resonance * germanium related centres * hydrogen * thermal stability
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.743, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.radmeas.2021.106604

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.
Permanent Link: http://hdl.handle.net/11104/0326161