Streamers at the subnanosecond breakdown of argon and nitrogen in nonuniform electric field at both polarities

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Streamers at the subnanosecond breakdown of argon and nitrogen in nonuniform electric field at both polarities	1 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1134/S1063784218060063

Title: Streamers at the subnanosecond breakdown of argon and nitrogen in nonuniform electric field at both polarities
Creator: Beloplotov, Dmitry V.
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Sorokin, Dmitry A.
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Tarasenko, Viktor Fedotovich
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Lomaev, Mikhail I.
Date: 2018
DOI: 10.1134/S1063784218060063
Description: An ICCD camera was used to study plasma glow at the stage of the streamer (ionization wave) formation in the tip–plane gap with a length of 3 mm filled with argon or nitrogen at a pressure of 12.5–400 kPa. Positive and negative nanosecond voltage pulses were applied across the gap. Images of streamer were obtained at different time at its propagation along the gap. A streak-camera equipped with a spectrometer was used to measure time evolution of the radiation intensity of nitrogen molecules at a wavelength of 337.1 nm in several regions along the gap at the negative polarity. Average streamer velocity (1.8 cm/ns) was estimated from experimental data at atmospheric pressure of nitrogen. Amplitude–time characteristics of voltage, discharge current and the current of runaway electron beam behind the aluminum-foil anode with a thickness of 10 μm were measured. Reasons for a diffuse discharge under the given experimental conditions were discussed.