EFFECTS OF AN INSULATION LAYER ON THE PROPAGATION OF A NORMAL ZONE IN SUPERCONDUCTING WIRES BELOW 4. 2 K.

K. Funaki, Yasuyuki Takata, M. Takeo, F. Irie, U. Ruppert, W. Z. Yang, E. Kristen, K. Lueders, G. Klipping

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The propagation velocity of a normal zone in NbTi multi-filamentary superconducting wires has been measured in the bath temperature range of 2. 05-4. 2 K. Bare and insulated wires were utilized for the experiment in order to examine the effect of an insulation layer. For the bare wire the propagation velocity decreases gradually with decreasing temperature, then drastic reduction was observed near the lambda point, and finally no propagation occurs in pressurized He II. For the insulated wire, on the other hand, the velocity is three times larger than that for the bare wire at 4. 2 K and the propagation was observed even in He II. Numerical analysis was performed for the insulated wire. The results agree quantitatively with the experiments.

Original languageEnglish
Title of host publicationProceedings of the International Cryogenic Engineering Conference
EditorsGustav Klipping, Ingrid Klipping
PublisherEngl
Pages730-734
Number of pages5
ISBN (Print)0408012587
Publication statusPublished - Dec 1 1986

Publication series

NameProceedings of the International Cryogenic Engineering Conference
ISSN (Print)0308-5422

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Funaki, K., Takata, Y., Takeo, M., Irie, F., Ruppert, U., Yang, W. Z., Kristen, E., Lueders, K., & Klipping, G. (1986). EFFECTS OF AN INSULATION LAYER ON THE PROPAGATION OF A NORMAL ZONE IN SUPERCONDUCTING WIRES BELOW 4. 2 K. In G. Klipping, & I. Klipping (Eds.), Proceedings of the International Cryogenic Engineering Conference (pp. 730-734). (Proceedings of the International Cryogenic Engineering Conference). Engl.