Anion interstitials in neutron-irradiated MgO single crystals

Authors
Karner, T Dolgov, S Mironova-Ulmane, N Nakonechnyi, S Vasil'chenko, E
Citation
T. Karner et al., Anion interstitials in neutron-irradiated MgO single crystals, RADIAT MEAS, 33(5), 2001, pp. 625-628
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
RADIATION MEASUREMENTS
ISSN journal
13504487 → ACNP
Volume
33
Issue
5
Year of publication
2001
Pages
625 - 628
Database
ISI
SICI code
1350-4487(200110)33:5<625:AIINMS>2.0.ZU;2-2
Abstract
Electron paramagnetic resonance (EPR) and high-temperature (300-775 K) ther moluminescence of neutron-irradiated MgO single crystals were studied. Spin -hamiltonian parameters of the observed anion interstitial centres (O-2(-) molecular ion in an oxygen site by a cation vacancy-H centre) were determin ed. The thermal stability of anion interstitials (H centres) and other EPR- active centres was investigated. It is shown that the thermal decay of H ce ntres is attended by a TL peak due to hole recombination luminescence at 70 0 K. A possible mechanism for the thermal destruction of anion Frenkel defe cts in MgO is discussed. (C) 2001 Elsevier Science Ltd. All rights reserved .