Publication:
Recrystallization as the governing mechanism of ion track formation

Дата
2019
Авторы
Rymzhanov, R. A.
Medvedev, N.
O'Connell, J. H.
vanVuuren, AJanse
Skuratov, V. A.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
Response of dielectric crystals: MgO, Al2O3 and Y3Al5O12 ( YAG) to irradiation with 167 MeV Xe ions decelerating in the electronic stopping regime is studied. Comprehensive simulations demonstrated that despite similar ion energy losses and the initial excitation kinetics of the electronic systems and lattices, significant differences occur among final structures of ion tracks in these materials, supported by experiments. No ion tracks appeared in MgO, whereas discontinuous distorted crystalline tracks of similar to 2 nm in diameter were observed in Al2O3 and continuous amorphous tracks were detected in YAG. These track structures in Al2O3 and YAG were confirmed by high resolution TEM data. The simulations enabled us to identify recrystallization as the dominant mechanism governing formation of detected tracks in these oxides. We analyzed effects of the viscosity in molten state, lattice structure and difference in the kinetics of metallic and oxygen sublattices at the crystallization surface on damage recovery in tracks.
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Recrystallization as the governing mechanism of ion track formation / Rymzhanov, RA [et al.] // Scientific Reports. - 2019. - 9. - 10.1038/s41598-019-40239-9
URI
https://www.doi.org/10.1038/s41598-019-40239-9
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85062641297&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000460508600067
 https://openrepository.mephi.ru/handle/123456789/16636
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