Features of the dynamics of particles and fields at cyclotron resonances


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Some features of the dynamics of particles and fields at cyclotron resonances have been discussed with the focus on chaotic dynamical regimes. It has been shown that the known criterion of the transition of the regular dynamics of particles to chaotic dynamics at cyclotron resonances sometimes describes this transition incorrectly. The reason for such a feature of the criterion has been revealed. The anomalous sensitivity of the dynamics of particles to external fluctuations at autoresonance has been analyzed. A theory of excitation of electromagnetic waves by a beam of phased oscillators under the conditions of isolated nonlinear cyclotron resonance has been developed. It has been shown that the chaotic dynamical regime is due to the periodic change in the structure of the phase portrait of particles in the wave field. It has been shown that higher moments can play a more significant role than lower moments in almost all chaotic dynamical regimes at cyclotron resonances. In this case, the known kinetic diffusion equations should be generalized with the inclusion of these higher moments.

作者简介

V. Buts

National Science Center Kharkiv Institute of Physics and Technology; Institute of Radioastronomy; Kharkiv National University

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Email: vbuts@kipt.kharkov.ua
乌克兰, Kharkiv, 61108; Kharkiv, 61002; Kharkiv, 61022

V. Kuz’min

National Science Center Kharkiv Institute of Physics and Technology; Kharkiv National University

Email: vbuts@kipt.kharkov.ua
乌克兰, Kharkiv, 61108; Kharkiv, 61022

A. Tolstoluzhsky

National Science Center Kharkiv Institute of Physics and Technology

Email: vbuts@kipt.kharkov.ua
乌克兰, Kharkiv, 61108

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