ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

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Anfinogentov V. G., Hramov A. E. Investigation of oscillations of electron beam with virtual cathode in vircator and virtod. Izvestiya VUZ. Applied Nonlinear Dynamics, 1999, vol. 7, iss. 2, pp. 33-55. DOI: 10.18500/0869-6632-1999-7-2-33-55

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Russian
Heading: 
Innovations in applied physics
Article type: 
Article
UDC: 
621.385.6
DOI: 
10.18500/0869-6632-1999-7-2-33-55

Investigation of oscillations of electron beam with virtual cathode in vircator and virtod

Autors: 
Anfinogentov Vasilij Gennadievich, Saratov State University
Hramov Aleksandr Evgenevich, Immanuel Kant Baltic Federal University
Abstract: 

Nonlinear dynamics of the electron beam with virtual cathode in the vacuum drift tube is investigated with the aid of nmumerical simulation. Deterministic nature of the complex virtual cathode oscillations is demonstrated. It is proved, that one of the mechanisms of the chaotic dynamics origin is connected with nonlinear interaction between forming structures in the eleciron beam (virtual cathodes). Inner structures in the beam are analyzed by the orthogonal decomposition by Karunen — Loeve method and the wavelet transform method. Effect of external delay feedback (virtod scheme) processes of structures formation in the electron beam with virtual cathode is analyzed, and it is shown, that feedback delay time variation allows controllmg charactenstlcs of high power microwave generation in vircator systems.

Key words: 
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Acknowledgments: 
The work was supported by the RFBR, grant 98-02-16541, and grant INCAS-S.
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Received: 
15.12.1998
Accepted: 
08.06.1999
Published: 
03.07.1999
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