TY - GEN
T1 - EFFECTS OF AN INSULATION LAYER ON THE PROPAGATION OF A NORMAL ZONE IN SUPERCONDUCTING WIRES BELOW 4. 2 K.
AU - Funaki, K.
AU - Takata, Y.
AU - Takeo, M.
AU - Irie, F.
AU - Ruppert, U.
AU - Yang, W. Z.
AU - Kristen, E.
AU - Lueders, K.
AU - Klipping, G.
PY - 1986
Y1 - 1986
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:0022949703
SN - 0408012587
T3 - Proceedings of the International Cryogenic Engineering Conference
SP - 730
EP - 734
BT - Proceedings of the International Cryogenic Engineering Conference
A2 - Klipping, Gustav
A2 - Klipping, Ingrid
PB - Engl
ER -