Relativistic electron beam acceleration by Compton scattering of extraordinary waves
Abstract
Relativistic transport equations, which demonstrate that relativistic and nonrelativistic particle acceleration along and across a magnetic field and the generation of an electric field transverse to the magnetic field, are induced by nonlinear waveparticle scattering (nonlinear Landau and cyclotron damping) of almost perpendicularly propagating electromagnetic waves in a relativistic magnetized plasma were derived from the relativistic VlasovMaxwell equations. The relativistic transport equations show that electromagnetic waves can accelerate particles in the k{sup ''} direction (k{sup ''}=kk{sup '}). Simultaneously, an intense crossfield electric field, E{sub 0}=B{sub 0}xv{sub d}/c, is generated via the dynamo effect owing to perpendicular particle drift to satisfy the generalized Ohm's law, which means that this crossfield particle drift is identical to the ExB drift. On the basis of these equations, acceleration and heating of a relativistic electron beam due to nonlinear waveparticle scattering of electromagnetic waves in a magnetized plasma were investigated theoretically and numerically. Two electromagnetic waves interact nonlinearly with the relativistic electron beam, satisfying the resonance condition of {omega}{sub k}{omega}{sub k{sup '}}(k{sub perpendicular}k{sub perpendicula=} r{sup '})v{sub d}(k{sub parallel}k{sub parallel}{sup '})v{sub b}{approx_equal}m{omega}{sub ce}, where v{sub b} and v{sub d} are the parallel and perpendicular velocities of the relativistic electron beam, respectively, and {omega}{sub ce} is themore »
 Authors:

 Department of Physics, Faculty of Science, Ehime University, 25 Bunkyocho, Matsuyama 7908577 (Japan)
 Publication Date:
 OSTI Identifier:
 20783086
 Resource Type:
 Journal Article
 Journal Name:
 Physics of Plasmas
 Additional Journal Information:
 Journal Volume: 13; Journal Issue: 5; Other Information: DOI: 10.1063/1.2197844; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070664X
 Country of Publication:
 United States
 Language:
 English
 Subject:
 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; BEAMPLASMA SYSTEMS; BOLTZMANNVLASOV EQUATION; COMPTON EFFECT; CYCLOTRON FREQUENCY; DAMPING; DISTRIBUTION FUNCTIONS; ELECTRIC FIELDS; ELECTROMAGNETIC FIELDS; ELECTROMAGNETIC RADIATION; ELECTRON BEAMS; ELECTRONS; GEV RANGE; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; MAXWELL EQUATIONS; NONLINEAR PROBLEMS; NUMERICAL ANALYSIS; OHM LAW; PLASMA GUNS; RELATIVISTIC PLASMA; RELATIVISTIC RANGE; RESONANCE; RF SYSTEMS; TRANSPORT THEORY
Citation Formats
Sugaya, R. Relativistic electron beam acceleration by Compton scattering of extraordinary waves. United States: N. p., 2006.
Web. doi:10.1063/1.2197844.
Sugaya, R. Relativistic electron beam acceleration by Compton scattering of extraordinary waves. United States. doi:10.1063/1.2197844.
Sugaya, R. Mon .
"Relativistic electron beam acceleration by Compton scattering of extraordinary waves". United States. doi:10.1063/1.2197844.
@article{osti_20783086,
title = {Relativistic electron beam acceleration by Compton scattering of extraordinary waves},
author = {Sugaya, R},
abstractNote = {Relativistic transport equations, which demonstrate that relativistic and nonrelativistic particle acceleration along and across a magnetic field and the generation of an electric field transverse to the magnetic field, are induced by nonlinear waveparticle scattering (nonlinear Landau and cyclotron damping) of almost perpendicularly propagating electromagnetic waves in a relativistic magnetized plasma were derived from the relativistic VlasovMaxwell equations. The relativistic transport equations show that electromagnetic waves can accelerate particles in the k{sup ''} direction (k{sup ''}=kk{sup '}). Simultaneously, an intense crossfield electric field, E{sub 0}=B{sub 0}xv{sub d}/c, is generated via the dynamo effect owing to perpendicular particle drift to satisfy the generalized Ohm's law, which means that this crossfield particle drift is identical to the ExB drift. On the basis of these equations, acceleration and heating of a relativistic electron beam due to nonlinear waveparticle scattering of electromagnetic waves in a magnetized plasma were investigated theoretically and numerically. Two electromagnetic waves interact nonlinearly with the relativistic electron beam, satisfying the resonance condition of {omega}{sub k}{omega}{sub k{sup '}}(k{sub perpendicular}k{sub perpendicula=} r{sup '})v{sub d}(k{sub parallel}k{sub parallel}{sup '})v{sub b}{approx_equal}m{omega}{sub ce}, where v{sub b} and v{sub d} are the parallel and perpendicular velocities of the relativistic electron beam, respectively, and {omega}{sub ce} is the relativistic electron cyclotron frequency. The relativistic transport equations using the relativistic drifted Maxwellian momentum distribution function of the relativistic electron beam were derived and analyzed. It was verified numerically that extraordinary waves can accelerate the highly relativistic electron beam efficiently with {beta}m{sub e}c{sup 2} < or approx. 1 GeV, where {beta}=(1v{sub b}{sup 2}/c{sup 2}){sup 1/2}.},
doi = {10.1063/1.2197844},
journal = {Physics of Plasmas},
issn = {1070664X},
number = 5,
volume = 13,
place = {United States},
year = {2006},
month = {5}
}