Plasma kinetic theory without the Markovian approximation: Numerical results

Journal Article · Wed Mar 01 04:00:00 EST 1989 · Phys Fluids B; (United States)

DOI:https://doi.org/10.1063/1.859163· OSTI ID:6488668

Pocobelli, G

A numerical computation is carried out for the evolution of the amplitude and the frequency shift of a monochromatic electron wave in an unmagnetized plasma by using a recently generalized quasilinear theory. The numerical results show that the theory gives a good representation of trapping phenomena. It is found that trapping originates from retaining fast scale terms, both in the orbits and in the propagation of the perturbed distribution f'. Such terms in the latter represent space and time correlations of the orbits, or, equivalently, the ''memory'' of the average distribution f-bar. Both theory and computation were done in the regime f'<< f-bar, or ePhi/T<1. Mode-coupling terms are not needed in such a regime.

• Research Organization: Department of Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0, Canada
• OSTI ID: 6488668
• Journal Information: Phys Fluids B; (United States), Journal Name: Phys Fluids B; (United States) Vol. 1:3; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
AMPLITUDES
DATA
DISTRIBUTION FUNCTIONS
ELECTROMAGNETIC RADIATION
ELECTRON PLASMA WAVES
EQUATIONS
FUNCTIONS
INFORMATION
KINETIC EQUATIONS
MONOCHROMATIC RADIATION
NUMERICAL DATA
PERTURBATION THEORY
PLASMA
PLASMA WAVES
RADIATIONS
SPECTRAL SHIFT
TRAPPING