Nonlinear wavenumber of an electron plasma wave

Journal Article · Wed Dec 31 23:00:00 EST 1975 · Phys. Fluids, v. 19, no. 1, pp. 32-42

DOI:https://doi.org/10.1063/1.861325· OSTI ID:4094870

Vidmar, P J; Malmberg, J H; Starke, T P

The wavenumber of a large-amplitude electron plasma wave propagating on a collisionless plasma column is measured. The wavenumber is shifted from that of a small-amplitude wave of the same frequency. This nonlinear wavenumber shift, deltak/subr/, depends on position, frequency, and initial wave amplitude, Phi. The observed spatial oscillations of deltak/subr/ agree qualitatively with recent theories. Experimentally deltak/subr/proportionalk/subi/S (Phi) rootPhi where k/subi/ is the linear Landau damping coefficient, S (Phi) equivalentk/subi/ (Phi)/k/subi/, and k/subi/(Phi) is the initial damping coefficient which depends on Phi. (AIP)

• Research Organization: Department of Physics, University of California at San Diego, La Jolla, California 92037
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-020044
• OSTI ID: 4094870
• Journal Information: Phys. Fluids, v. 19, no. 1, pp. 32-42, Journal Name: Phys. Fluids, v. 19, no. 1, pp. 32-42; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

*PLASMA WAVES-- FREQUENCY DEPENDENCE
700108* --Fusion Energy--Plasma Research--Plasma Wave Phenomena
COLLISIONLESS PLASMA
ELECTRONS
LANDAU DAMPING
N70900* --Physics--Controlled Thermonuclear Research--Wave Phenomena
NONLINEAR PROBLEMS
TRAPPING