期刊
PHYSICS OF PLASMAS
卷 21, 期 4, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4871719
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资金
- Presidium of the Russian Academy of Sciences
- Russian Foundation for Basic Research [14-08-00524-a]
An experiment has been performed to study the electrical explosion of thick cylindrical conductors using the MIG pulsed power generator capable of producing a peak current of 2.5 MA within 100 ns rise time. The experimental goal was to compare the skin explosion of a solid conductor with that of a double-layer conductor whose outer layer had a lower conductivity than the inner one. It has been shown that in magnetic fields of peak induction up to 300 T and average induction rise rate 3 x 10(9) T/s, the double-layer structure of a conductor makes it possible to achieve higher magnetic induction at the conductor surface before it explodes. This can be accounted for, in particular, by the reduction of the ratio of the Joule heat density to the energy density of the magnetic field at the surface of a double-layer conductor due to redistribution of the current density over the conductor cross section. (C) 2014 AIP Publishing LLC.
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