Mathematical Simulation of the Distribution of the Electron Beam Current during Pulsed Heating of a Metal Target

Abstract: We study a model of the current distribution during heating of the surface of a tungstensample under pulsed exposure to an electron beam. The model is based on solving the equationsof electrodynamics and the two-phase Stefan problem for calculating the temperature in thesample region using a cylindrical coordinate system. The model parameters were taken fromexperiments at the “Beam of Electrons for Materials Test Applications” (BETA) stand created atthe Budker Institute of Nuclear Physics. The particular case of axial symmetry is consideredwithout taking the electromotive forces into account. The current is considered as a possiblesource of rotation of the substance which is observed in the experiment. The values of the currentand the acceleration of matter at a surface temperature of over 6000K were obtained. The results of the simulationshow that, to obtain an acceleration capable of initiating the experimentally observed rotationof the melt, it is necessary to take into account some alternative mechanisms of creating a currentin the system with consideration of the evaporation of tungsten above the plate. © 2021, Pleiades Publishing, Ltd.

Authors
Lazareva G.G. 1, 2 , Popov V.A. 2 , Arakcheev A.S.3, 4 , Burdakov A.V.3, 4 , Schwab I.V.2, 5 , Vaskevich V.L.2, 6 , Maksimova A.G.2 , Ivashin N.E.2 , Oksogoeva I.P. 1
Publisher
Pleiades journals
Number of issue
2
Language
English
Pages
292-301
Status
Published
Volume
15
Year
2021
Organizations
  • 1 People’s Friendship University of Russia, Moscow, 117198, Russian Federation
  • 2 Novosibirsk State University, Novosibirsk, 630090, Russian Federation
  • 3 Novosibirsk State Technical University, Novosibirsk, 630073, Russian Federation
  • 4 Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russian Federation
  • 5 Federal Research Center for Information and Computational Technologies, Novosibirsk, 630090, Russian Federation
  • 6 Sobolev Institute of Mathematics, Novosibirsk, 630090, Russian Federation
Keywords
distribution of electron beam current; mathematical simulation; method of upper relaxation; potential of current; rotation of tungsten melt
Date of creation
16.12.2021
Date of change
16.12.2021
Short link
https://repository.rudn.ru/en/records/article/record/76798/
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