Critical current measured indirectly via flux-compression technique. Magnetic flux compressed into gap between superconductive hollow cylinder and superconductive rod when rod inserted in hole in cylinder. Hall-effect probe measures flux density before and after compression. Method does not involve any electrical contact with superconductor. Therefore, does not cause resistive heating and consequent premature loss of superconductivity.
Noncontact Measurement Of Critical Current In Superconductor
NASA Tech Briefs ; 16 , 1
1992-01-01
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Englisch
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