Journal article
Dynamics of electrons in a parabolic magnetic field perturbed by an electromagnetic wave
Plasma physics and controlled fusion, v 53(8), p085014
01 Aug 2011
Abstract
In this paper we study the resonance interaction between monochromatic electromagnetic waves and fully magnetized electrons in a model parabolic magnetic field (like, e. g., in the Earth's magnetotail). The smallness of certain physical parameters allows us to approach this problem using perturbation theory for multiscale (slow-fast) systems: the study of the global interaction is reduced to the analysis of slow passages of particles through a resonance. At the resonance, two important phenomena occur: capture into resonance and scattering on resonance. We show that while the primary adiabatic invariant (magnetic moment or Larmor radius) remains conserved, these processes result in destruction of the second, longitudinal, adiabatic invariant. We find significant acceleration of particles by capture into resonance, while the scatterings on resonances lead to decrease in energy and chaotization of particles.
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Details
- Title
- Dynamics of electrons in a parabolic magnetic field perturbed by an electromagnetic wave
- Creators
- Anatoly Neishtadt - Moscow Space Res Inst, Moscow 117810, RussiaDmitri Vainchtein - Moscow Space Res Inst, Moscow 117810, RussiaAlexei Vasiliev - Moscow Space Res Inst, Moscow 117810, Russia
- Publication Details
- Plasma physics and controlled fusion, v 53(8), p085014
- Publisher
- IOP Publishing Ltd
- Number of pages
- 15
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- C. and J. Nyheim Plasma Institute
- Web of Science ID
- WOS:000309726100008
- Scopus ID
- 2-s2.0-79961081508
- Other Identifier
- 991021861629204721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Fluids & Plasmas