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Title

Current distributions in multi-filamentary HTS conductors

Authors
Johnston, Milton D.
Volkozub, A.V.
Caplin, A.D.
Eckelmann, H.
Goldacker, W.
Published in Zhou, L.; Weber, H.W. & Collings, E.W. Proceedings of the International Workshop Critical Currents in Superconductors for Practical Applications. Xi'an - March 6-8, 1997 - Singapore: World Scientific. 1998, p. 229-232
Abstract We have used scanning Hall probe microscopy to image in detail the current profile of two high-quality multi-filamentary Bi2223 tapes. In a tape with 37 twisted filaments, the derived current profile evolves smoothly across the width as the current is increased, whereas that of the untwisted 19-filament tape shows considerably more variation. In both cases, the central group of filaments carries most current at higher levels. The derived current distribution is well-described by the ellipsoidal solid conducting core model, rather than that of a thin flat conducting strip.
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ISBN: 981-02-3313-2
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JOHNSTON, Milton D. et al. Current distributions in multi-filamentary HTS conductors. In: Zhou, L.; Weber, H.W. & Collings, E.W. (Ed.). Proceedings of the International Workshop Critical Currents in Superconductors for Practical Applications. Xi'an. Singapore : World Scientific, 1998. p. 229-232. https://archive-ouverte.unige.ch/unige:112631

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