Recent studies on nanosecond-timescale pressurized gas discharges. (5th October 2016)

• Record Type: Journal Article
• Authors: Yatom, S; Shlapakovski, A; Beilin, L; Stambulchik, E; Tskhai, S; Krasik, Ya E
• Is Part Of: Plasma sources science & technology. Volume 25:Number 6(2016:Dec.)
• Publication Date: 2016-10-05
• Subjects: high-pressure nanosecond discharge -- plasma diagnostics -- runaway electrons -- microwave discharge -- plasma interference switch; Plasma (Ionized gases) -- Periodicals; 530.44
• DOI: 10.1088/0963-0252/25/6/064001
• Languages: English
• ISSNs: 0963-0252

Abstract

Abstract: The results of recent experimental and numerical studies of nanosecond high-voltage discharges in pressurized gases are reviewed. The discharges were ignited in a diode filled by different gases within a wide range of pressures by an applied pulsed voltage or by a laser pulse in the gas-filled charged resonant microwave cavity. Fast-framing imaging of light emission, optical emission spectroscopy, x-ray foil spectrometry and coherent anti-Stokes Raman scattering were used to study temporal and spatial evolution of the discharge plasma density and temperature, energy distribution function of runaway electrons and dynamics of the electric field in the plasma channel. The results obtained allow a deeper understanding of discharge dynamical properties in the nanosecond timescale, which is important for various applications of these types of discharges in pressurized gases.