Publication: Elastic backscattering as a method for the measurement of the integral lithium content in thin films on fusion-relevant substrates
Дата
2019
Авторы
Mayer, M.
Krat, S.
Vasina, Y.
Prishvitsyn, A.
Gasparyan, Y.
Pisarev, A.
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Volume Title
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Аннотация
© 2019 Elsevier B.V.Different ion beam analysis techniques for the study of thin lithium-containing layers on top of fusion relevant materials are discussed and compared to each other. Elastic backscattering analysis (EBS) with protons is determined to be one of the most promising techniques and allows measurements of Li layers with thicknesses from ∼100 nm up to ∼600 μm, as shown by SIMNRA simulations. The best sensitivity for thin films (∼100 nm) can be achieved using 4 MeV protons with 170° scattering detection angle for layers on Mo and W substrates, and 2 MeV for C substrates. Experimentally EBS measurements were successfully tested for Li films with thicknesses from ∼50 nm up to ∼400 nm after air exposure. The Li films become strongly inhomogeneous and require averaging over multiple measurements in nearby areas. This necessitates averaging over multiple nearby measurement points, and limits the overall precision of the measurement.
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Elastic backscattering as a method for the measurement of the integral lithium content in thin films on fusion-relevant substrates / Mayer, M. [et al.] // Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. - 2019. - 455. - P. 124-133. - 10.1016/j.nimb.2019.06.025
URI
https://www.doi.org/10.1016/j.nimb.2019.06.025
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https://openrepository.mephi.ru/handle/123456789/18278
https://www.scopus.com/record/display.uri?eid=2-s2.0-85067979798&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000477786500020
https://openrepository.mephi.ru/handle/123456789/18278