期刊
PHYSICAL REVIEW LETTERS
卷 94, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.94.035004
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We present experimental evidence of corona-free electrical explosion of dielectric-coated W wire in vacuum. A fast current rise of similar to150 A/ns and a coating of 2 mum polyimide are both needed to achieve the corona-free regime of explosion. Breakdown is absent in corona-free explosion; the wire remains resistive, and this allows anomalously high energy deposition (similar to20 times atomization enthalpy). MHD simulations reproduce the main differences between corona and corona-free explosions. A corona-free explosion of a wire can be useful for the generation of a hot plasma column by direct energy deposition.
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