Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution

Abstract The secondary electron emission process is essential for the optimal operation of a wide range of applications, including fusion reactors, high-energy accelerators, or spacecraft. The process can be influenced and controlled by the use of a magnetic field. An analytical solution is proposed...

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Autor principal:	Claudiu Costin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/60aef0989f7b4b839f2a1e8b5937508d
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spelling	oai:doaj.org-article:60aef0989f7b4b839f2a1e8b5937508d2021-12-02T15:23:29ZSecondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution10.1038/s41598-021-81345-x2045-2322https://doaj.org/article/60aef0989f7b4b839f2a1e8b5937508d2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81345-xhttps://doaj.org/toc/2045-2322Abstract The secondary electron emission process is essential for the optimal operation of a wide range of applications, including fusion reactors, high-energy accelerators, or spacecraft. The process can be influenced and controlled by the use of a magnetic field. An analytical solution is proposed to describe the secondary electron emission process in an oblique magnetic field. It was derived from Monte Carlo simulations. The analytical formula captures the influence of the magnetic field magnitude and tilt, electron emission energy, electron reflection on the surface, and electric field intensity on the secondary emission process. The last two parameters increase the effective emission while the others act the opposite. The electric field effect is equivalent to a reduction of the magnetic field tilt. A very good agreement is shown between the analytical and numerical results for a wide range of parameters. The analytical solution is a convenient tool for the theoretical study and design of magnetically assisted applications, providing realistic input for subsequent simulations.Claudiu CostinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Claudiu Costin Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution
description	Abstract The secondary electron emission process is essential for the optimal operation of a wide range of applications, including fusion reactors, high-energy accelerators, or spacecraft. The process can be influenced and controlled by the use of a magnetic field. An analytical solution is proposed to describe the secondary electron emission process in an oblique magnetic field. It was derived from Monte Carlo simulations. The analytical formula captures the influence of the magnetic field magnitude and tilt, electron emission energy, electron reflection on the surface, and electric field intensity on the secondary emission process. The last two parameters increase the effective emission while the others act the opposite. The electric field effect is equivalent to a reduction of the magnetic field tilt. A very good agreement is shown between the analytical and numerical results for a wide range of parameters. The analytical solution is a convenient tool for the theoretical study and design of magnetically assisted applications, providing realistic input for subsequent simulations.
format	article
author	Claudiu Costin
author_facet	Claudiu Costin
author_sort	Claudiu Costin
title	Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution
title_short	Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution
title_full	Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution
title_fullStr	Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution
title_full_unstemmed	Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution
title_sort	secondary electron emission under magnetic constraint: from monte carlo simulations to analytical solution
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/60aef0989f7b4b839f2a1e8b5937508d
work_keys_str_mv	AT claudiucostin secondaryelectronemissionundermagneticconstraintfrommontecarlosimulationstoanalyticalsolution
_version_	1718387267610869760

Secondary electron emission under magnetic constraint: from Monte Carlo simulations to analytical solution

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