The formation of miniature analogues of bead lightning in nitrogen and air during pulsed discharge in nonuniform electric field
V.F. Tarasenko, D.V. Beloplotov
High Current Electronics Institute of the Siberian Branch of the RAS, 634055, Tomsk, 2/3, Academichesky ave. HCEI SB RAS
Keywords: формирование миниатюрной чёточной молнии, наносекундный пробой воздуха и азота, неоднородное электрическое поле, убегающие электроны, formation of a miniature bead lightning, nanosecond breakdown of air and nitrogen, inhomogeneous electric field, runaway electrons
Abstract
The discharge glow dynamics in a point-plane gap during a nanosecond breakdown of air and nitrogen initiated by runaway electrons is studied with an ICCD camera. Formation of plasma clots that form a structure similar to the even lightning has been observed. It is shown that the number of bright plasma clots in the gap (individual beads) increases with an increase in the pressure. Up to four individual beads of equal size have been recorded in nitrogen at a pressure of 0.4 MPa.
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