Dynamics of the spatial structure of pulsed discharges in dense gases in point cathode−plane anode gaps and their erosion effect on the plane electrode surface
- Autores: Baksht E.1, Blinova O.2, Erofeev M.1, Karelin V.2, Ripenko V.1, Tarasenko V.1, Trenkin A.2, Shibitov Y.2, Shulepov M.1
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Afiliações:
- Institute of High Current Electronics, Siberian Branch
- Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics
- Edição: Volume 42, Nº 9 (2016)
- Páginas: 876-886
- Seção: Low-Temperature Plasma
- URL: https://journals.rcsi.science/1063-780X/article/view/185944
- DOI: https://doi.org/10.1134/S1063780X16090014
- ID: 185944
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Resumo
The dynamics of the spatial structure of the plasma of pulsed discharges in air and nitrogen in a nonuniform electric field and their erosion effect on the plane anode surface were studied experimentally. It is established that, at a nanosecond front of the voltage pulse, a diffuse discharge forms in the point cathode–plane anode gap due to the ionization wave propagating from the cathode. As the gap length decreases, the diffuse discharge transforms into a spark. A bright spot on the anode appears during the diffuse discharge, while the spark channel forms in the later discharge stage. The microstructure of autographs of anode spots and spark channels in discharges with durations of several nanoseconds is revealed. The autographs consist of up to 100 and more microcraters 5–100 μm in diameter. It is shown that, due to the short duration of the voltage pulse, a diffuse discharge can be implemented, several pulses of which do not produce appreciable erosion on the plane anode or the soot coating deposited on it.
Sobre autores
E. Baksht
Institute of High Current Electronics, Siberian Branch
Email: mve@loi.hcei.tsc.ru
Rússia, Akademicheskii pr. 2/3, Tomsk, 634055
O. Blinova
Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics
Email: mve@loi.hcei.tsc.ru
Rússia, Sarov, Nizhny Novgorod oblast, 607188
M. Erofeev
Institute of High Current Electronics, Siberian Branch
Autor responsável pela correspondência
Email: mve@loi.hcei.tsc.ru
Rússia, Akademicheskii pr. 2/3, Tomsk, 634055
V. Karelin
Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics
Email: mve@loi.hcei.tsc.ru
Rússia, Sarov, Nizhny Novgorod oblast, 607188
V. Ripenko
Institute of High Current Electronics, Siberian Branch
Email: mve@loi.hcei.tsc.ru
Rússia, Akademicheskii pr. 2/3, Tomsk, 634055
V. Tarasenko
Institute of High Current Electronics, Siberian Branch
Email: mve@loi.hcei.tsc.ru
Rússia, Akademicheskii pr. 2/3, Tomsk, 634055
A. Trenkin
Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics
Email: mve@loi.hcei.tsc.ru
Rússia, Sarov, Nizhny Novgorod oblast, 607188
Yu. Shibitov
Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics
Email: mve@loi.hcei.tsc.ru
Rússia, Sarov, Nizhny Novgorod oblast, 607188
M. Shulepov
Institute of High Current Electronics, Siberian Branch
Email: mve@loi.hcei.tsc.ru
Rússia, Akademicheskii pr. 2/3, Tomsk, 634055