The Influence of the Sample Shape on the Flux Jumps Dynamics in Conventional NbTi Superconductor |
| A. Nabiałek a, S. Piechota a, H. Szymczak a, S. Vasiliev b, V. Chabanenko b and V. Rusakov c
a Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland b Donetsk Physico-Technical Institute, Ukrainian Academy of Sciences, 72 R. Luxemburg str., 83114, Donetsk, Ukraine c Donetsk National University, 24 Universitetskaya str., 83055, Donetsk, Ukraine |
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| Received: 6 11 2007; |
| We investigated giant flux jumps, caused by thermomagnetic avalanches, in two cylindrical samples of conventional NbTi-50% superconductor of the same diameter - 14 mm, but of different heights - 4 mm and 20 mm. We studied the influence of demagnetizing effects on the flux jumps occurrence, the amount of the magnetic flux entering the sample during the following jumps and on the flux jumps dynamics. The dynamics of the magnetic flux entering the sample is compared with the dynamics of the stray field. |
| DOI: 10.12693/APhysPolA.114.235 PACS numbers: 74.70.Ad, 74.25.Ha |