Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission

A condition has been found for a positively charged electron beam to be formed when secondary electrons, knocked out by the beam electrons from the collector, are present in the drift space. The parameters of total electron space charge compensation by positive ions for different collector materials...

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Главные авторы:	Martens, V. Y., Мартенс, В. Я.
פורמט:	Статья
שפה:	English
יצא לאור:	2024
נושאים:	Electron beams Space charge Gas ionization Ions Overcompensation Secondary electrons
גישה מקוונת:	https://dspace.ncfu.ru/handle/123456789/27062
תגים:	הוספת תג אין תגיות, היה/י הראשונ/ה לתייג את הרשומה!

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spelling	ir-123456789-270622024-03-28T10:08:54Z Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission Martens, V. Y. Мартенс, В. Я. Electron beams Space charge Gas ionization Ions Overcompensation Secondary electrons A condition has been found for a positively charged electron beam to be formed when secondary electrons, knocked out by the beam electrons from the collector, are present in the drift space. The parameters of total electron space charge compensation by positive ions for different collector materials and different ions have been calculated. Two types of axially symmetric positively charged electron beams have been experimentally investigated: beams with the current density maximum located on the axis of the drift tube and beams with the current density maximum located at a distance from the axis. Estimates based on measurements of the radial potential distribution in the drift tube have shown that the excess positive ion charge created in the second case should be three times that in the first case. This can be explained by the accumulation of ions in the potential well-formed inside an axially symmetric electron beam of the second type. 2024-03-28T10:08:06Z 2024-03-28T10:08:06Z 2023 Статья Martens, V.Y. Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission // Bulletin of the Russian Academy of Sciences: Physics. - 2023. - 87 (Suppl 2). - pp. S335-S340. - DOI: 10.1134/S1062873823704828 https://dspace.ncfu.ru/handle/123456789/27062 en Bulletin of the Russian Academy of Sciences: Physics application/pdf
institution	СКФУ
collection	Репозиторий
language	English
topic	Electron beams Space charge Gas ionization Ions Overcompensation Secondary electrons
spellingShingle	Electron beams Space charge Gas ionization Ions Overcompensation Secondary electrons Martens, V. Y. Мартенс, В. Я. Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission
description	A condition has been found for a positively charged electron beam to be formed when secondary electrons, knocked out by the beam electrons from the collector, are present in the drift space. The parameters of total electron space charge compensation by positive ions for different collector materials and different ions have been calculated. Two types of axially symmetric positively charged electron beams have been experimentally investigated: beams with the current density maximum located on the axis of the drift tube and beams with the current density maximum located at a distance from the axis. Estimates based on measurements of the radial potential distribution in the drift tube have shown that the excess positive ion charge created in the second case should be three times that in the first case. This can be explained by the accumulation of ions in the potential well-formed inside an axially symmetric electron beam of the second type.
format	Статья
author	Martens, V. Y. Мартенс, В. Я.
author_facet	Martens, V. Y. Мартенс, В. Я.
author_sort	Martens, V. Y.
title	Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission
title_short	Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission
title_full	Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission
title_fullStr	Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission
title_full_unstemmed	Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission
title_sort	formation of positively charged electron beams in the presence of secondary electron emission
publishDate	2024
url	https://dspace.ncfu.ru/handle/123456789/27062
work_keys_str_mv	AT martensvy formationofpositivelychargedelectronbeamsinthepresenceofsecondaryelectronemission AT martensvâ formationofpositivelychargedelectronbeamsinthepresenceofsecondaryelectronemission
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Formation of Positively Charged Electron Beams in the Presence of Secondary Electron Emission

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