Discharge current and current of supershort avalanche E-beam at volume nanosecond discharge in non-uniform electric field

Victor F. Tarasenko; Dmitrii V. Rybka; Evgenii H. Baksht; Igor' D. Kostyrya; Mikhail I. Lomaev

doi:10.1117/12.785633

9 January 2008 Discharge current and current of supershort avalanche E-beam at volume nanosecond discharge in non-uniform electric field

Victor F. Tarasenko, Dmitrii V. Rybka, Evgenii H. Baksht, Igor' D. Kostyrya, Mikhail I. Lomaev

Author Affiliations +

Proceedings Volume 6938, Atomic and Molecular Pulsed Lasers VII; 69380M (2008) https://doi.org/10.1117/12.785633
Event: Atomic and Molecular Pulsed Lasers VII, 2007, Tomsk, Russian Federation

Abstract

The gas diode current-voltage characteristics at the voltage pulses applied from the RADAN and SM-3NS pulsers, and generation of an supershort avalanche electron beam (SAEB) have been studied experimentally in an inhomogeneous electric field upon a nanosecond breakdown in an air gap at atmospheric pressure. Displacement currents with amplitude over 1 kA have been observed and monitored. It is shown that the displacement current amplitude gets increased due to movement of the dense plasma front and charging of a "capacitor" formed between plasma and anode. The SAEB generation time relatively to the discharge current pulses and the gap voltage were determined in the experiments. It is shown that the SAEB current maximum at the pulser voltages of hundreds kV is registered on the discharge current pulse front, before the discharge current peak of the gas diode capacitance, and the delay time of these peaks is determined by the value of an interelectrode spacing. The delay time in case of a gap of 16 mm and air breakdown at atmospheric pressure was ~100 ps, and in case of 10 mm it was less than 50 ps.

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Victor F. Tarasenko, Dmitrii V. Rybka, Evgenii H. Baksht, Igor' D. Kostyrya, and Mikhail I. Lomaev "Discharge current and current of supershort avalanche E-beam at volume nanosecond discharge in non-uniform electric field", Proc. SPIE 6938, Atomic and Molecular Pulsed Lasers VII, 69380M (9 January 2008); https://doi.org/10.1117/12.785633

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