Formation of dislocations in LiF irradiated with 3He and 4He ions

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dc.contributor.authorManika, Ilze P.
dc.contributor.authorZabels, Roberts
dc.contributor.authorManiks, Janis J.
dc.contributor.authorSchwartz, Kurt
dc.contributor.authorGrants, Rolands
dc.contributor.authorKrasta, T.
dc.contributor.authorKuzmin, Alexei
dc.date.accessioned2020-08-19T17:46:40Z
dc.date.available2020-08-19T17:46:40Z
dc.date.issued2018
dc.description.abstractInfluence of the irradiation with 13.5 MeV 3He and 5 MeV 4He ions on the micro-structure and mechanical properties of LiF single crystals was studied. The depth profiles of nanoindentation, dislocation mobility, selective chemical etching and photoluminescence served for the characterization of damage. Strong ion-induced increase of hardness and decrease in dislocation mobility at the stage of track overlapping due to accumulation of dislocations and other extended defects was observed. At high fluences (1015 ions/cm2) the hardness saturates at about 3.5 GPa (twofold increase in comparison to a virgin crystal) thus confirming high efficiency of light projectiles in modifications of structure and properties. The effects of ion-induced increase of hardness and decrease of dislocation mobility are observed also beyond the ion range and possible mechanisms of such damage are discussed.en_US
dc.description.sponsorshipThis work has been supported by the Latvian national program IMIS2; 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.jnucmat.2018.05.005
dc.identifier.issn0022-3115
dc.identifier.urihttps://dspace.lu.lv/dspace/handle/7/52432
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.ispartofseriesJournal of Nuclear Materials;507
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectResearch Subject Categories::NATURAL SCIENCES:Physicsen_US
dc.subject3He and 4He ionsen_US
dc.subjectDamage beyond the ion rangeen_US
dc.subjectDislocationsen_US
dc.subjectIon-irradiationen_US
dc.subjectLiF crystalsen_US
dc.subjectNanoindentationen_US
dc.subjectPhotoluminescenceen_US
dc.titleFormation of dislocations in LiF irradiated with 3He and 4He ionsen_US
dc.typeinfo:eu-repo/semantics/articleen_US
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