Transformation of the induction of magnetic field in superconductor as a result of thermomagnetic avalanches at flux trapping regime.
Keywords:
hard superconductor type II, critical current, magnetic visualization, Meissner holes, magnetic flux avalancheAbstract
Basing on the data of magnetooptical measurements of thermomagnetic instabilities in superconductors of type II, the distribution of the magnetic field induction was studied at consequence emerging magnetic avalanche at the surface of a superconducting disc. It was shown that when external magnetic field decreases to zero, so called Meissner holes appears in sample. The magnitude of local current (which is defined by z – component of magnetic field) practically is identical for all avalanches.References
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