Free and forced m=0 oscillations of a sharp-boundary Vlasov-fluid screw pinch

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.862851· OSTI ID:5540179

Cayton, T E; Lewis, H R

A dispersion differential equation is derived from the linearized equations of the Vlasov-fluid model for a sharp-boundary screw pinch using a very general fast-gyration, small-gyroradius ordering for the ions. Analytic solutions of the dispersion differential equation are obtained. The influence of finite ion gyroradius effects on both free and forced, azimuthally symmetric, small-amplitude oscillations of the plasma column is studied, and the results are compared and contrasted with the asymptotic guiding center plasma description. The forced oscillations are considered for frequencies at and below the first magnetoacoustic resonance. Small, but finite, ion gyroradii can influence the absorption of resonant magnetoacoustic oscillations strongly.

• Research Organization: Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545
• OSTI ID: 5540179
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 23:1; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ABSORPTION
ANALYTICAL SOLUTION
BOLTZMANN-VLASOV EQUATION
BOUNDARY CONDITIONS
CHARGED PARTICLES
CONFIGURATION
CYLINDRICAL CONFIGURATION
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
EQUATIONS
GUIDING-CENTER APPROXIMATION
HEATING
HIGH-BETA PLASMA
HYDROMAGNETIC WAVES
IONS
LARMOR RADIUS
MAGNETIC FIELDS
MAGNETOACOUSTIC WAVES
MAXWELL EQUATIONS
NORMAL-MODE ANALYSIS
PINCH EFFECT
PLASMA
PLASMA HEATING
PLASMA WAVES
RESONANCE
SCREW PINCH