Recombination luminescence of X-ray induced paramagnetic defects in BaY2F8
Автор
Antuzevics, Andris
Fedotovs, Andris
Berzins, Dzintars
Rogulis, Uldis
Auzins, Krisjanis
Zolotarjovs, Aleksejs
Baldochi, Sonia Licia
Дата
2020Metadata
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Recombination luminescence (RL) and RL-detected electron paramagnetic resonance (RL-EPR) in BaY2F8 single crystal has been investigated after irradiation with X-rays at low temperature. The recombination process, which lasts for several hours at 4 K, results in several broad bands in the RL spectrum. RL-EPR spectra show pronounced angular dependences on crystal orientation relative to external magnetic field. Based on the determined spin-Hamiltonian parameter values the recombination centres have been proposed to be F-type electron and self-trapped hole (VK) centres