Accumulation of radiation defects and modification of micromechanical properties under MgO crystal irradiation with swift 132Xe ions

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dc.contributor.authorBaubekova, G.
dc.contributor.authorAkilbekov, A.
dc.contributor.authorFeldbach, E.
dc.contributor.authorGrants, Rolands
dc.contributor.authorManika, Ilze P.
dc.contributor.authorPopov, Anatoli I.
dc.contributor.authorSchwartz, K.
dc.contributor.authorVasil'Chenko, Evgeni A.
dc.contributor.authorZdorovets, Maxim V.
dc.contributor.authorLushchik, Aleksandr Ch
dc.date.accessioned2020-10-01T13:25:29Z
dc.date.available2020-10-01T13:25:29Z
dc.date.issued2020
dc.descriptionThis work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. A.A. also acknowledges support via the project GF AP05134257 of Ministry of Education and Science of the Republic of Kazakhstan .en_US
dc.description.abstractAccumulation of F-type defects under irradiation of MgO crystals by 0.23-GeV 132Xe ions with fluence varying by three orders of magnitude has been investigated via the spectra of optical absorption and low-temperature cathodoluminescence. The number of single centers continuously increases with fluence without any marks of saturation. At the highest fluence, a mean volume concentration of 3.1 × 1019 and 3.35 × 1019 cm−3 is reached for F and F+ centers, respectively. The F+ emission strongly dominates in the cathodoluminescence of irradiated MgO and its enhancement with fluence is detected. However, the creation efficiency of the F2 aggregate centers is very low and fluence dependence has a complicated shape. Radiation-induced changes of micro-mechanical properties of the same samples have been analysed; the depth profiles of hardening correlate with the ion energy loss. A joint contribution of ionization and impact mechanisms in the formation of structural defects under MgO irradiation with Xe ions is considered.en_US
dc.description.sponsorshipH2020 Euratom 2019-2020,633053,2014-2018,GF AP05134257; Ministry of Education and Science of the Republic of Kazakhstan GF AP05134257; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART²en_US
dc.identifier.doi10.1016/j.nimb.2019.11.021
dc.identifier.issn0168-583X
dc.identifier.urihttps://dspace.lu.lv/dspace/handle/7/52553
dc.language.isoengen_US
dc.publisherElsevier B.V.en_US
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART²en_US
dc.relation.ispartofseriesNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms;463
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectResearch Subject Categories::NATURAL SCIENCES:Physicsen_US
dc.subjectDepth profile of hardeningen_US
dc.subjectFluence dependenceen_US
dc.subjectMagnesium oxideen_US
dc.subjectOptical absorptionen_US
dc.subjectRadiation defectsen_US
dc.subjectSwift heavy ionsen_US
dc.titleAccumulation of radiation defects and modification of micromechanical properties under MgO crystal irradiation with swift 132Xe ionsen_US
dc.typeinfo:eu-repo/semantics/articleen_US
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