Parametric up-conversion of an electron Bernstein mode by a relativistic electron beam in a plasma

Journal Article · Tue May 15 04:00:00 EDT 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2736368· OSTI ID:20974980

Kumar, Asheel; Tripathi, V K ^[1]

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1. Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016 (India)

A relativistic electron beam, propagating with velocity v{sub 0b} parallel z in a magnetized plasma, parametrically up-converts a pre-existing electron Bernstein wave ({omega}{sub 0},k{sub 0}) into electromagnetic radiation when k{sub 0}{center_dot}v{sub 0b}<0. The Bernstein wave couples with a negative energy space-charge mode ({omega},k) to produce a frequency up-converted sideband electromagnetic wave. The sideband and the Bernstein wave exert a ponderomotive force, driving space-charge mode. In the Compton regime, the growth rate of the parametric instability scales as two-third power of the pump amplitude, whereas in the Raman regime, it goes linearly.

• OSTI ID: 20974980
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 14; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
BEAM-PLASMA SYSTEMS
BERNSTEIN MODE
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONS
NONLINEAR PROBLEMS
PARAMETRIC INSTABILITIES
PLASMA
PLASMA WAVES
PONDEROMOTIVE FORCE
RELATIVISTIC RANGE
SPACE CHARGE