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Article Dans Une Revue Plasma Physics and Technology Année : 2017

Evolution of the cathode spot distribution in an axial magnetic field controlled vacuum arc at long contact gap

P Chapelle
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A. Jardy

Résumé

The distribution of cathode spots in a CuCr25 vacuum arc controlled by an axial magnetic field and ignited on the lateral surface of the cathode is investigated for long gap distances, from the processing of high-speed video images. The processing method includes also estimating the current carried by a single spot and reconstructing the distribution of the current density at the cathode. Various distributions depending partly on the arc current are described.
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hal-02106987 , version 1 (13-01-2022)

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B. Tezenas Du Montcel, P Chapelle, A. Jardy, C. Creusot. Evolution of the cathode spot distribution in an axial magnetic field controlled vacuum arc at long contact gap. Plasma Physics and Technology, 2017, 4 (1), pp.99-103. ⟨10.14311/ppt.2017.1.99⟩. ⟨hal-02106987⟩
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