Publication:
MD study of surface collision cascades in nickel

Дата
2020
Авторы
Voskoboinikov, R.
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Издатель
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
© 2020 Elsevier B.V.Collision cascades initiated by fast Ni projectiles with energy E = 5, 10, 15 and 20 keV at the surface of nickel target at temperature T = 100, 300, 600, 900 and 1200 K were studied by molecular dynamics simulations. Representative sampling of 24 surface collision cascades per E,T set was generated to get the statistically reliable number of Frenkel pairs NFP and the fraction of vacancies σvac and self-interstitial atoms (SIAs) σSIA in point defect clusters as functions of the projectile energy and irradiation temperature. It was established that NFP,σvac and σSIA in surface collision cascades in nickel averaged over cascade series with the same E,T are higher than those produced in collision cascades in the bulk of the material under the same simulation conditions. Point defects generated in surface cascades predominantly agglomerate into clusters. Spatial separation of vacancies and SIAs due to the interaction of collision cascades with the free surface is the major driving mechanism responsible for the increased number of NFP,σvac and σSIA produced in surface collision cascades in nickel.
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Цитирование
Voskoboinikov, R. MD study of surface collision cascades in nickel / Voskoboinikov, R. // Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. - 2020. - 479. - P. 200-204. - 10.1016/j.nimb.2020.06.032
URI
https://www.doi.org/10.1016/j.nimb.2020.06.032
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85087987836&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000571009400010
 https://openrepository.mephi.ru/handle/123456789/22021
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