PhysRevLett.115.155001.pdf (1.2 MB)
Nonresonant charged particle acceleration by electrostatic wave propagating across fluctuating magnetic field
journal contribution
posted on 2015-11-04, 12:11 authored by A.V. Artemyev, Anatoly NeishtadtAnatoly Neishtadt, Alexei Vasiliev, L.M. ZelenyiIn this Letter, we demonstrate the effect of nonresonant charged-particle acceleration by an electrostatic wave propagating across the background magnetic field. We show that in the absence of resonance (i.e., when particle velocities are much smaller than the wave phase velocity) particles can be accelerated by electrostatic waves provided that the adiabaticity of particle motion is destroyed by magnetic field fluctuations. Thus, in a system with stochastic particle dynamics the electrostatic wave should be damped even in the absence of Landau resonance. The proposed mechanism is responsible for the acceleration of particles that cannot be accelerated via resonant wave-particle interactions. Simplicity of this straightforward acceleration scenario indicates a wide range of possible applications.
Funding
The work was supported by the RFBR # 13-01-00251 (A.V.A. and A.A.V.), and by Leading Scienti c Schools project NSh-2964.2014.1 (A.I.N.).
History
School
- Science
Department
- Mathematical Sciences
Published in
Physical Review LettersCitation
ARTEMYEV, A.V. ... et al, 2015. Nonresonant charged particle acceleration by electrostatic wave propagating across fluctuating magnetic field. Physical Review Letters, 115 (15), 155001.Publisher
© American Physical SocietyVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2015Notes
This article was published in the journal, Physical Review Letters [© American Physical Society].ISSN
0031-9007Publisher version
Language
- en