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Telecommunications and Radio Engineering
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ISSN Druckformat: 0040-2508
ISSN Online: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v54.i5-6.70
pages 78-84

Dynamics of a Wave Spectrum in Beam-Plasma Systems

Victor Ivanovich Tkachenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine
Petr Vasilievich Turbin
Scientific Center of Physical Technologies, Ministry of Education and National Academy of Science of Ukraine


The dynamics of beam-plasma instability, taking into account a wide spectrum of raised Langmuir oscillations, is considered. It is shown that at an initial stage, oscillations close to resonant are generated with increments predicted by linear theory. Further, with a delay on the order of ten inverse linear increments the oscillations on multiple frequencies begin to grow. After that, the redistribution of energy throughout the entire spectrum and the establishment of practically uniform energy distribution on frequencies (with a poorly expressed maximum on the resonant frequency) is realised at times on the order of 30 inverse linear increments.

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