Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules
In the paper, the characteristics of electron flows formed by an electron-optical system with composite field emitters, made from thermally expanded graphite or a mixture of such graphite with diamond granules have been studied. These cathodes were developed at the Saint Petersburg Polytechnic Unive...
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| Format: | Article |
| Language: | English |
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Peter the Great St.Petersburg Polytechnic University
2025-03-01
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| Series: | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
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| Online Access: | https://physmath.spbstu.ru/article/2025.78.09/ |
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| author | Taradaev Evgeny Sominskii Gennadii Taradaev Sergei Gordeev Sergey |
| author_facet | Taradaev Evgeny Sominskii Gennadii Taradaev Sergei Gordeev Sergey |
| author_sort | Taradaev Evgeny |
| collection | DOAJ |
| description | In the paper, the characteristics of electron flows formed by an electron-optical system with composite field emitters, made from thermally expanded graphite or a mixture of such graphite with diamond granules have been studied. These cathodes were developed at the Saint Petersburg Polytechnic University and the Central Research Institute of Materials. A distinguishing feature of these cathodes is their improved geometry. The maximum achievable emission currents, as well as the longitudinal and transverse components of the velocity of emitted electrons in the electron flow, were determined. The measurements were carried out in pulsed and continuous operations. Experiments showed that these types of cathodes provided emission currents up to 30 mA and operated stably under technical vacuum conditions. |
| format | Article |
| id | doaj-art-b877e6b979aa4e1882d9abd2dfa934b7 |
| institution | DOAJ |
| issn | 2405-7223 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Peter the Great St.Petersburg Polytechnic University |
| record_format | Article |
| series | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
| spelling | doaj-art-b877e6b979aa4e1882d9abd2dfa934b72025-08-20T02:53:34ZengPeter the Great St.Petersburg Polytechnic UniversitySt. Petersburg Polytechnical University Journal: Physics and Mathematics2405-72232025-03-0118110.18721/JPM.1810920714726Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granulesTaradaev Evgeny0https://orcid.org/0000-0001-5219-6744Sominskii Gennadii1https://orcid.org/0000-0001-7945-7238Taradaev Sergei2https://orcid.org/0000-0001-5548-7379Gordeev Sergey3https://orcid.org/0000-0001-5790-7197Peter the Great St. Petersburg Polytechnic UniversityPeter the Great St. Petersburg Polytechnic UniversityPeter the Great St. Petersburg Polytechnic UniversityJSC "Central reseach institute for materials"In the paper, the characteristics of electron flows formed by an electron-optical system with composite field emitters, made from thermally expanded graphite or a mixture of such graphite with diamond granules have been studied. These cathodes were developed at the Saint Petersburg Polytechnic University and the Central Research Institute of Materials. A distinguishing feature of these cathodes is their improved geometry. The maximum achievable emission currents, as well as the longitudinal and transverse components of the velocity of emitted electrons in the electron flow, were determined. The measurements were carried out in pulsed and continuous operations. Experiments showed that these types of cathodes provided emission currents up to 30 mA and operated stably under technical vacuum conditions.https://physmath.spbstu.ru/article/2025.78.09/field emissioncomposite cathodesthermally expanded graphiteelectron-optical systemelectron beam |
| spellingShingle | Taradaev Evgeny Sominskii Gennadii Taradaev Sergei Gordeev Sergey Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules St. Petersburg Polytechnical University Journal: Physics and Mathematics field emission composite cathodes thermally expanded graphite electron-optical system electron beam |
| title | Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules |
| title_full | Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules |
| title_fullStr | Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules |
| title_full_unstemmed | Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules |
| title_short | Formation of an electron beam by an electron-optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules |
| title_sort | formation of an electron beam by an electron optical system using a composite field emitter made of thermally expanded graphite and a mixture of thermally expanded graphite with diamond granules |
| topic | field emission composite cathodes thermally expanded graphite electron-optical system electron beam |
| url | https://physmath.spbstu.ru/article/2025.78.09/ |
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