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ISSN 2542-1905 (Online)

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Kurkin S. A., Badarin A. A., Koronovskii A. A., Rak A. O., Hramov A. E. Higher harmonics generation in a relativistic electron beam with virtual cathode. Izvestiya VUZ. Applied Nonlinear Dynamics, 2015, vol. 23, iss. 1, pp. 41-52. DOI: 10.18500/0869-6632-2015-23-1-41-52

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Higher harmonics generation in a relativistic electron beam with virtual cathode

Kurkin Semen Andreevich, Innopolis University
Badarin Artem Aleksandrovich, Innopolis University
Koronovskii Aleksei Aleksandrovich, Saratov State University
Rak Aleksej Olegovich, Belarusian State University of Informatics and Radioelectronics
Hramov Aleksandr Evgenevich, Innopolis University

The study of the microwave generation regimes with intense higher harmonics taking place in a high-power vircator consisting of a relativistic electron beam with a virtual cathode has been made. The characteristics of these regimes, in particular, the typical spectra and their variations with the change of the system parameters (beam current, the induction of external magnetic field) as well as physical processes occurring in the system have been analyzed by means of 3D electromagnetic simulation. It has been shown that the system under study demonstrates the tendency to the sufficient growth of the amplitudes of higher harmonics in the spectrum of current oscillations in the VC region with the increase of beam current. The obtained results allow us to consider virtual cathode oscillators as promising high power mmw-to-THz sources.

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