Publication: Effect of the presence of helium in tungsten on deuterium retention
Дата
2021
Авторы
Kanashenko, S.
Ogorodnikova, O. V.
Harutyunyan, Z. R.
Gasparyan, Y. M.
Efimov, V. S.
Kharkov, M. M.
Kaziev, A. V.
Journal Title
Journal ISSN
Volume Title
Издатель
Аннотация
© 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.
Описание
Ключевые слова
Цитирование
Effect 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
URI
https://www.doi.org/10.1016/j.jnucmat.2021.152873
https://www.scopus.com/record/display.uri?eid=2-s2.0-85100884434&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000635058300004
https://openrepository.mephi.ru/handle/123456789/23680
https://www.scopus.com/record/display.uri?eid=2-s2.0-85100884434&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000635058300004
https://openrepository.mephi.ru/handle/123456789/23680