Direct measurement of interfilament resistance in Nb3 Sn strands

V. Corato, L. Muzzi, U. Besi Vetrella, A. Della Corte

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Abstract

In modeling the properties of superconducting multifilamentary strands, transverse resistivity plays a crucial role in the definition of the coupling losses in ac regime, as well as of the current transfer length, that affects the transport properties of Nb3 Sn wires subject to bending strain. We present the first direct measurement of the interfilament transverse resistance in superconducting strands from room temperature to 4.2 K. Results have been compared to the transverse resistance of a sample on which the outer copper stabilization layer has been removed by chemical etching, obtaining interesting indication on the preferential current paths within the wire cross section. An excellent agreement between experimental data and theoretical models has been found in describing the whole strand, while improvements are required in modeling the filamentary region alone. © 2009 American Institute of Physics.
Original languageEnglish
Article number093930
Pages (from-to)-
JournalJournal of Applied Physics
Volume105
Issue number9
DOIs
Publication statusPublished - 2009
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Corato, V., Muzzi, L., Vetrella, U. B., & Della Corte, A. (2009). Direct measurement of interfilament resistance in Nb3 Sn strands. Journal of Applied Physics, 105(9), -. [093930]. https://doi.org/10.1063/1.3125523