Experimental Observation of Chaotic Generation at 1.5% Spectral Width in a Gyrotron under Large Supercriticality Conditions
- Authors: Rozental R.M.1, Fedotov A.E.1, Ginzburg N.S.1, Zotova I.V.1, Volkov A.B.1, Samsonov S.V.1, Semenov E.S.1, Sergeev A.S.1
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Affiliations:
- Institute of Applied Physics, Russian Academy of Sciences
- Issue: Vol 45, No 5 (2019)
- Pages: 511-514
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208318
- DOI: https://doi.org/10.1134/S1063785019050304
- ID: 208318
Cite item
Abstract
A complex chaotic dynamics in a gyrotron was experimentally observed under conditions of high supercriticality corresponding to 1000–1500-fold excess of the beam current parameter over the starting value. At electron beam currents typical of gyrotron test setups, this excess has been achieved by a transition to excitation of the lowest mode of a cylindrical waveguide. Chaotic generation regimes were observed in a 33 GHz frequency range with a spectral width of 500 MHz and record narrow relative width below 1.5% These results imply considerable progress in comparison to previous experiments with gyrotron type devices and are in good agreement with theoretical analysis based on a system of averaged evolution equations derived with allowance for finiteness of the transit time of electrons via the interaction space.
About the authors
R. M. Rozental
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
A. E. Fedotov
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
N. S. Ginzburg
Institute of Applied Physics, Russian Academy of Sciences
Author for correspondence.
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
I. V. Zotova
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
A. B. Volkov
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
S. V. Samsonov
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
E. S. Semenov
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950
A. S. Sergeev
Institute of Applied Physics, Russian Academy of Sciences
Email: rrz@appl.sci-nnov.ru
Russian Federation, Nizhny Novgorod, 603950