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dc.contributor.authorYoneda, N.en
dc.contributor.authorShikama, T.en
dc.contributor.authorHanada, K.en
dc.contributor.authorMori, S.en
dc.contributor.authorOnchi, T.en
dc.contributor.authorKuroda, K.en
dc.contributor.authorHasuo, M.en
dc.contributor.authorEjiri, A.en
dc.contributor.authorMatsuzaki, K.en
dc.contributor.authorOsawa, Y.en
dc.contributor.authorPeng, Y.en
dc.contributor.authorKawamata, Y.en
dc.contributor.authorSakamoto, S.en
dc.contributor.authorIdei, H.en
dc.contributor.authorIdo, T.en
dc.contributor.authorNakamura, K.en
dc.contributor.authorNagashima, Y.en
dc.contributor.authorIkezoe, R.en
dc.contributor.authorHasegawa, M.en
dc.contributor.authorHigashijima, A.en
dc.contributor.authorNagata, T.en
dc.contributor.authorShimabukuro, S.en
dc.contributor.alternative米田, 奈生ja
dc.contributor.alternative四竃, 泰一ja
dc.contributor.alternative森, 暁ja
dc.contributor.alternative蓮尾, 昌裕ja
dc.date.accessioned2022-12-13T06:00:58Z-
dc.date.available2022-12-13T06:00:58Z-
dc.date.issued2021-03-
dc.identifier.urihttp://hdl.handle.net/2433/277795-
dc.description.abstractA spectroscopic system with multiple viewing chords was developed for QUEST (Q-shu University Experiment with Steady-State Spherical Tokamak) to measure the spatial distribution of ion toroidal velocities in discharges sustained by electron cyclotron resonance heating (ECH). Twenty-four viewing chords were aligned in the midplane and C III emission line spectra were measured for three types of ECH discharge under different magnetic field configurations. By applying an inversion method to the measured spectra, we evaluated the radial distributions of C2+ ion emissivity, temperature, and toroidal velocity. The error in the evaluated velocity was estimated to be less than 5 km/s. It was found that the velocity depends on the magnetic field configuration.en
dc.language.isoeng-
dc.publisherElsevier BVen
dc.rights© 2021 The Author(s). Published by Elsevier Ltd.en
dc.rightsThis is an open access article under the CC BY-NC-ND license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.subjectSpherical tokamaken
dc.subjectECHen
dc.subjectMagnetic configurationen
dc.subjectToroidal flowen
dc.subjectEmission spectroscopyen
dc.subjectInversionen
dc.titleToroidal flow measurements of impurity ions in QUEST ECH plasmas using multiple viewing chords emission spectroscopyen
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.jtitleNuclear Materials and Energyen
dc.identifier.volume26-
dc.relation.doi10.1016/j.nme.2021.100905-
dc.textversionpublisher-
dc.identifier.artnum100905-
dcterms.accessRightsopen access-
dc.identifier.eissn2352-1791-
出現コレクション:学術雑誌掲載論文等

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