Loading of deuterium and helium by Pilot-PSI plasma and their detection by in-situ LIBS

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Piip, Kaarel
dc.contributor.author van der Meiden, H.J.
dc.contributor.author Bystrov, Kiril
dc.contributor.author Hämarik, Lauri
dc.contributor.author Karhunen, Juuso
dc.contributor.author Aints, Märt
dc.contributor.author Laan, Matti
dc.contributor.author Paris, Peeter
dc.contributor.author Seemen, H.
dc.contributor.author Hakola, Antti
dc.contributor.author Brezinsek, Sebastijan
dc.date.accessioned 2017-05-11T09:07:07Z
dc.date.available 2017-05-11T09:07:07Z
dc.date.issued 2017
dc.identifier.citation Piip , K , van der Meiden , H J , Bystrov , K , Hämarik , L , Karhunen , J , Aints , M , Laan , M , Paris , P , Seemen , H , Hakola , A & Brezinsek , S 2017 , ' Loading of deuterium and helium by Pilot-PSI plasma and their detection by in-situ LIBS ' Nuclear Materials and Energy . DOI: 10.1016/j.nme.2016.12.034 en
dc.identifier.issn 2352-1791
dc.identifier.other PURE UUID: c7f51058-c26b-4492-bb13-fd4f7a104c43
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/loading-of-deuterium-and-helium-by-pilotpsi-plasma-and-their-detection-by-insitu-libs(c7f51058-c26b-4492-bb13-fd4f7a104c43).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/18027078/1_s2.0_S2352179116301041_main.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25849
dc.description.abstract Laser-induced breakdown spectroscopy (LIBS) is a promising method for quantifying the fuel content of the plasma-facing components of ITER both in between plasma discharges (in-situ) and after maintenance operations. The aim of the present study is to test the applicability of in-situ LIBS for monitoring deuterium (D) and helium (He) content of W samples exposed to fusion relevant plasma fluxes in the linear plasma device Pilot-PSI. The D loading was performed during 1000 s of plasma exposure at low (200-300 °C) surface temperatures. Despite of low intensity and noisy LIBS spectra, H and D lines, at 656.1 and 656.3 nm, respectively, could be fitted with Lorentzian contours and reliably resolved at 1.2 mbar background pressure of argon. In the case of He loading, the samples were also exposed to plasma during 1000 s while the surface temperature reached values up to 720 °C at the center. Already at 10–2 mbar residual pressure of the device, the He I line at 587.6 nm was visible for the first 2–3 laser shots. We demonstrated that in-situ LIBS is a reliable method for detection of He and D retention in ITER-relevant materials. Nevertheless, for measuring relative and absolute concentrations of D and He in the ITER-relevant samples, further studies are needed. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Nuclear Materials and Energy en
dc.rights openAccess en
dc.subject.other 114 Physical sciences en
dc.title Loading of deuterium and helium by Pilot-PSI plasma and their detection by in-situ LIBS en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department University of Tartu
dc.contributor.department FOM-Institute DIFFER
dc.contributor.department Department of Applied Physics
dc.contributor.department VTT Technical Research Centre of Finland
dc.contributor.department Forschungszentrum Jülich GmbH
dc.subject.keyword Plasma surface interaction
dc.subject.keyword LIBS
dc.subject.keyword Fuel retention
dc.subject.keyword Tungsten
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201705114224
dc.identifier.doi 10.1016/j.nme.2016.12.034
dc.type.version proof


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