Runaway electrons beams in stationary open discharge for technological applications

The effect of air pressure (12.5, 25, 50, and 100 kPa) on the generation of runaway electron beams in a non-uniform electric field when applying voltage pulses (≈35 kV) with a rise time of ≈200 ns has been studied. The results show that the discharge has various stages: streamer, diffuse, and spark. Initially, a wide streamer develops in the gap and a diffuse discharge is formed. A spark is formed ≈100 ns after the breakdown. The current pulse of a supershort avalanche electron beam (SAEB) was measured with a collector at various pressures of air. Experiments show that there are two modes of generation of runaway electrons. At an air pressure of 25-100 kPa, a single SAEB current pulse with a full width at half-maximum (FWHM) of 120-140 ps is observed. At the air pressure of 12.5 kPa, two current pulses of the electron beam are observed. FWHM of the first and second current pulses are ≈140 ps and ≈300 ps, respectively. The current pulse amplitude of the second electron beam is higher than that of the first one, but the electron energy is less.

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Evaluation of Characteristics of Plasma Created by an Electron-Beam Generator with Gas Feeding into the Discharge Channel

Shloydo,

Turkin

2023

Plasma Phys. Rep.

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Runaway electrons beams in stationary open discharge for technological applications

Cited by 3 publications

References 14 publications

Open discharge-based electron beam generator with rare gas blown through the discharge gap

Open discharge-based electron beam generator with rare gas blown through the discharge gap

E-beam generation in discharges initiated by voltage pulses with a rise time of 200 ns at an air pressure of 12.5–100 kPa

Evaluation of Characteristics of Plasma Created by an Electron-Beam Generator with Gas Feeding into the Discharge Channel

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