Generation of low-frequency electrostatic and electromagnetic waves as nonlinear consequences of beam-plasma interactions

Journal Article · Sun Jun 15 04:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2937818· OSTI ID:21120473

Umeda, Takayuki ^[1]

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1. Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8601 (Japan)

Nonlinear evolution of the electron two-stream instability in a current-carrying plasma is examined by using a two-dimensional electromagnetic particle-in-cell simulation. Formation of electron phase-space holes is observed as an early nonlinear consequence of electron-beam-plasma interactions. Lower-hybrid waves, electrostatic, and electromagnetic whistler mode waves are also excited by different mechanisms during the ensuing nonlinear wave-particle interactions. It is shown by the present computer simulation with a large simulation domain and a long simulation time that these low-frequency waves can disturb the electrostatic equilibrium of electron phase-space holes, suggesting that the lifetime of electron phase-space holes sometimes becomes shorter in a current-carrying plasma.

• OSTI ID: 21120473
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
COMPUTERIZED SIMULATION
CURRENTS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ELECTRONS
LOWER HYBRID CURRENT DRIVE
LOWER HYBRID HEATING
NONLINEAR PROBLEMS
PHASE SPACE
PLASMA
PLASMA WAVES
TWO-DIMENSIONAL CALCULATIONS
TWO-STREAM INSTABILITY
WHISTLER INSTABILITY