Study of current redistribution in an aluminium stabilized superconductor

When a superconductor switches from a superconducting to a normal state, the current will move out of the superconductor and redistribute itself in the stabilizer. To study this current diffusion phenomenon in the conductor, a separation of variables method is used to solve directly the current diff...

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Bibliographic Details
Published in:Cryogenics (Guildford) 1992, Vol.32 (10), p.863-866
Main Authors: Lee, A., Wands, R.H., Fast, R.W.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
mathematical models
Metals. Metallurgy
Physics
stability
Superconducting materials (excluding high-tc compounds)
Superconductivity
superconductors
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Summary:When a superconductor switches from a superconducting to a normal state, the current will move out of the superconductor and redistribute itself in the stabilizer. To study this current diffusion phenomenon in the conductor, a separation of variables method is used to solve directly the current diffusion equation for a rectangular composite conductor. The average power generation over the conductor cross-section is obtained based on the calculated current density profile. An excess power generation term is found during the transition period that decays exponentially with time. Finally, a comparison between this approach and the Devred solution shows a good agreement.
ISSN:0011-2275
1879-2235
DOI:10.1016/0011-2275(92)90351-A