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Effect of the presence of helium in tungsten on deuterium retention

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dc.contributor.authorKanashenko, S.
dc.contributor.authorOgorodnikova, O. V.
dc.contributor.authorHarutyunyan, Z. R.
dc.contributor.authorGasparyan, Y. M.
dc.contributor.authorEfimov, V. S.
dc.contributor.authorKharkov, M. M.
dc.contributor.authorKaziev, A. V.
dc.contributor.authorОгородникова, Ольга Вячеславовна
dc.contributor.authorАрутюнян, Зорий Робертович
dc.contributor.authorГаспарян, Юрий Микаэлович
dc.contributor.authorЕфимов, Виталий Сергеевич
dc.contributor.authorХарьков, Максим Михайлович
dc.contributor.authorКазиев, Андрей Викторович
dc.date.accessioned2024-11-29T11:44:34Z
dc.date.available2024-11-29T11:44:34Z
dc.date.issued2021
dc.description.abstract© 2021Tungsten (W) samples were pre-irradiated with low-energy helium (He) ions with an energy of 80 eV, flux of 1021 He/m2s, at a sample temperature of 1200–1250 K in a inductively coupled plasma (ICP) source facility. Such irradiation conditions led to a formation of a nano-structured surface layer of tungsten, called ‘fuzz’. These samples were then irradiated with D3+ ions with an energy of 2 keV and small doses of 1019 D/m2 at room temperature and in-situ thermal desorption analysis (TDS) was performed. It was found that the main factor determining the deuterium (D) retention in W samples pre-irradiated with helium is the concentration of helium below the surface, namely, the D retention was increased with decreasing the He concentration until the nanostructured W ‘fuzz’ was removed. The effect of nano-structured tungsten ‘fuzz’ is only in a decrease of the reflection coefficient of deuterium ions compared to a smoother surface, resulting in the increase of the D influx into W and, consequently, increase of the D retention. However, this increase has a minor effect on the D retention compared to the He concentration in the subsurface layer of W.
dc.identifier.citationEffect of the presence of helium in tungsten on deuterium retention / Kanashenko, S. [et al.] // Journal of Nuclear Materials. - 2021. - 548. - 10.1016/j.jnucmat.2021.152873
dc.identifier.doi10.1016/j.jnucmat.2021.152873
dc.identifier.urihttps://www.doi.org/10.1016/j.jnucmat.2021.152873
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dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000635058300004
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23680
dc.relation.ispartofJournal of Nuclear Materials
dc.titleEffect of the presence of helium in tungsten on deuterium retention
dc.typeArticle
dspace.entity.typePublication
oaire.citation.volume548
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