Year: 1968
Type: article
Abstract: The effect of different surface treatments on flux penetration and dissipation at 50 Hz in bulk niobium samples has been quantitatively investigated. It is shown that for a sufficiently smooth sample surface the onset of a.c. dissipation occurs when the peak applied magnetic field exceeds H c1 +Δ H , in striking contrast to earlier results. A comparison of experimental results with a generalized critical-state model yields good agreement.
Authors: R M Easson, P Hlawiczka
Institution: University of Glasgow
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
Funder: UK Atomic Energy Authority
OpenAlex ID: W2015484548