Parameters of ribbon electron beam formed by HVGD guns: study of plasma boundary position

I. V. Melnyk; Serhii Tuhai; O. M. Kovalenko; M. Y. Skrypka

doi:10.3103/S0735272724020031

Authors

I. V. Melnyk National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine https://orcid.org/0000-0003-0220-0615
Serhii Tuhai National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine https://orcid.org/0000-0001-7646-1979
O. M. Kovalenko National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine
M. Y. Skrypka National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine https://orcid.org/0009-0006-7142-5569

DOI:

https://doi.org/10.3103/S0735272724020031

Keywords:

electron beam technologies, electron gun, ribbon electron beam, high-voltage glow discharge, anode plasma

Abstract

In the first part of the paper, analytical relations are obtained to calculate the plasma boundary position relative to the cathode surface in the high-voltage glow discharge electrode system forming a ribbon electron beam with a linear focus. The calculations assume that in systems with different electrode geometries, the anode plasma occupies the same volume under the same accelerating voltage and pressure. The simulated graphical dependencies of the plasma boundary position on the accelerating voltage and gas pressure are presented. The theoretical and experimental studies show that the calculated data for the plasma boundary position relative to the cathode differ from the experimental data by no more than 10% in the case of medium and high-pressure values in the gas discharge gun chamber.

Computer simulation methods can determine the electric field distribution and focal parameters of a linearly focused ribbon electron beam, as in high-voltage glow discharge electrode systems, where the anode plasma is a source of ions and an electrode with potential.

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