Methods and algorithm for calculating the focal parameters of a hollow conical electron beam in high-voltage glow discharge electron guns with a focusing magnetic lens

Authors

  • Igor Melnyk Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine https://orcid.org/0000-0003-0220-0615
  • Sergey Tugay Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine https://orcid.org/0000-0001-7646-1979
  • Volodymyr Kyryk Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine
  • Iryna Shved Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine

DOI:

https://doi.org/10.20535/SRIT.2308-8893.2021.3.02

Keywords:

high-voltage glow discharge, magnetic lens, hollow electron beam, electron drift model, minimax analysis, focal diameter of the electron beam, focal ring thickness

Abstract

The algorithm is considered for calculating the focal distance of a hollow conical electron beam generated by high-voltage glow discharge electron guns with magnetic focusing of the beam in the drift region, as well as a method for calculating the diameter of the focal ring and its thickness for such a beam. The proposed algorithm is based on the theory of electron drift in the field of a focusing magnetic lens and is designed using the methods of discrete mathematics and the minimax analysis. The obtained simulation results made it possible to establish the influence of the magnetic lens current on the focal diameter of a hollow conical electron beam and on its focal ring thickness. It is shown that the change in the focal parameters of a hollow conical electron beam can be effectively provided through the regulation of the magnetic lens current.

Author Biographies

Igor Melnyk, Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv

Igor V. Melnyk,

Doctor of Technical Sciences, a professor at the Electronic Devices and Systems Department of the Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine.

He has been employed at the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" since 1989 as post-graduate, an assistant professor (since 1994), as an associate professor (since 2004) and as a professor (since 2016). Doctor of Technical Sciences since 2009.

Main scientific interests: simulation of electronic systems, electron beam technologies and equipment, materials processing.

Sergey Tugay, Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv

Sergey B. Tugay,

Сandidate of Technical Sciences (Ph.D.), an associate professor at the Electronic Devices and Systems Department of the Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine.

He has been employed at the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" since 2010 in the positions of a postgraduate student, an assistant (since 2014) and an associate professor (since 2019). In 2013 he defended his Ph.D. thesis.

Main research interests: theory of high-voltage glow discharge, electron-beam technologies and equipment, electron-beam processing of materials.

Volodymyr Kyryk, Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv

Volodymyr O. Kyryk,

a graduate student at the Electronic Devices and Systems Department of the Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine.

Main research interests: theory of high-voltage glow discharge.

Iryna Shved, Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv

Iryna S. Shved,

a student at the Electronic Devices and Systems Department of the Faculty of Electronics of the National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Kyiv, Ukraine.

Main research interests: theory of high-voltage glow discharge.

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Published

2021-09-30

Issue

No. 3 (2021)

Section

Progressive information technologies, high-efficiency computer systems

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