Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence
In this paper, the properties and the formation of collective electromagnetic trap for electron beam that propagates in a conducting cylinder are described. It is shown that the electron beam provides the development of an electrostatic instability in the above-mentioned conditions. The instability...
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| Опубліковано в: : | Вопросы атомной науки и техники |
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| Дата: | 2002 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2002
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/80306 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence / A.A. Bizyukov, E.D. Volkov, I.K. Tarasov // Вопросы атомной науки и техники. — 2002. — № 4. — С. 144-145. — Бібліогр.: 7 назв. — англ. |
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nasplib_isofts_kiev_ua-123456789-80306 |
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Bizyukov, A.A. Volkov, E.D. Tarasov, I.K. 2015-04-14T17:29:06Z 2015-04-14T17:29:06Z 2002 Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence / A.A. Bizyukov, E.D. Volkov, I.K. Tarasov // Вопросы атомной науки и техники. — 2002. — № 4. — С. 144-145. — Бібліогр.: 7 назв. — англ. 1562-6016 PACS: 52.59.-f https://nasplib.isofts.kiev.ua/handle/123456789/80306 In this paper, the properties and the formation of collective electromagnetic trap for electron beam that propagates in a conducting cylinder are described. It is shown that the electron beam provides the development of an electrostatic instability in the above-mentioned conditions. The instability leads to the appearance of a non-stationary virtual cathode and the formation of electrostatic potential trap. This phenomenon takes place in the central region of the drive space where the amplitude of the electrostatic potential has two maxima. The trap confines electrons during its formation and keeps them inside the drift tube. Once seized in the trap, electrons have rather low temperature and are unstable to diocotron oscillations. During the evolution of diocotron instability the spatial charge redistribution takes place in the cross-section of the beam, which is probably connected with the drift of electrons in longitudinal magnetic field. This process is accompanied not only by azimuthal redistribution of the beam density, but also by radial transfer of electrons across magnetic field, which leads to the increase of the radial beam dimensions and to the injection of electrons onto the walls of the drift chamber. The variations of the radial beam dimensions, and, hence, the spatial charge redistribution in longitudinal direction lead to the corresponding variation of the longitudinal distribution of electric potential, and appearance of self-consistent field of 'potential pit' type in central region of the drive space. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Plasma electronics Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence |
| spellingShingle |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence Bizyukov, A.A. Volkov, E.D. Tarasov, I.K. Plasma electronics |
| title_short |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence |
| title_full |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence |
| title_fullStr |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence |
| title_full_unstemmed |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence |
| title_sort |
charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence |
| author |
Bizyukov, A.A. Volkov, E.D. Tarasov, I.K. |
| author_facet |
Bizyukov, A.A. Volkov, E.D. Tarasov, I.K. |
| topic |
Plasma electronics |
| topic_facet |
Plasma electronics |
| publishDate |
2002 |
| language |
English |
| container_title |
Вопросы атомной науки и техники |
| publisher |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| format |
Article |
| description |
In this paper, the properties and the formation of collective electromagnetic trap for electron beam that propagates in a conducting cylinder are described. It is shown that the electron beam provides the development of an electrostatic instability in the above-mentioned conditions. The instability leads to the appearance of a non-stationary virtual cathode and the formation of electrostatic potential trap. This phenomenon takes place in the central region of the drive space where the amplitude of the electrostatic potential has two maxima. The trap confines electrons during its formation and keeps them inside the drift tube. Once seized in the trap, electrons have rather low temperature and are unstable to diocotron oscillations. During the evolution of diocotron instability the spatial charge redistribution takes place in the cross-section of the beam, which is probably connected with the drift of electrons in longitudinal magnetic field. This process is accompanied not only by azimuthal redistribution of the beam density, but also by radial transfer of electrons across magnetic field, which leads to the increase of the radial beam dimensions and to the injection of electrons onto the walls of the drift chamber. The variations of the radial beam dimensions, and, hence, the spatial charge redistribution in longitudinal direction lead to the corresponding variation of the longitudinal distribution of electric potential, and appearance of self-consistent field of 'potential pit' type in central region of the drive space.
|
| issn |
1562-6016 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/80306 |
| citation_txt |
Charged particles accumulation in drift space of warm electron beam during non-stationary virtual cathod existence / A.A. Bizyukov, E.D. Volkov, I.K. Tarasov // Вопросы атомной науки и техники. — 2002. — № 4. — С. 144-145. — Бібліогр.: 7 назв. — англ. |
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AT bizyukovaa chargedparticlesaccumulationindriftspaceofwarmelectronbeamduringnonstationaryvirtualcathodexistence AT volkoved chargedparticlesaccumulationindriftspaceofwarmelectronbeamduringnonstationaryvirtualcathodexistence AT tarasovik chargedparticlesaccumulationindriftspaceofwarmelectronbeamduringnonstationaryvirtualcathodexistence |
| first_indexed |
2025-12-07T20:19:45Z |
| last_indexed |
2025-12-07T20:19:45Z |
| _version_ |
1850882166655811584 |