Damping of ion-acoustic waves in the presence of electron-ion collisions

Journal Article · Mon Sep 21 00:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.1765· OSTI ID:7028014

Epperlein, E M; Short, R W; Simon, A ^[1]

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1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)

The properties of ion-acoustic waves in a plasma are investigated by analytically solving the electron Fokker-Planck (FP) and cold-ion fluid equations for arbitrary electron-ion ({ital e}-{ital i}) collision strength. This is achieved by developing a reduced form of the FP equation with a generalized collision frequency. It is demonstrated that the effective wave damping can be treated as a combination of collisional and collisionless mechanisms. Contrary to several previous reports, weak {ital e}-{ital i} collisions are shown to increase the damping rate above the collisionless electron Landau limit.

• DOE Contract Number: FC03-85DP40200
• OSTI ID: 7028014
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:12; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ANALYTICAL SOLUTION
CHARGED PARTICLES
COLD PLASMA
COLLISIONS
DAMPING
DATA
DIFFERENTIAL EQUATIONS
DISTRIBUTION FUNCTIONS
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
EQUATIONS
FOKKER-PLANCK EQUATION
FUNCTIONS
INFORMATION
ION ACOUSTIC WAVES
ION COLLISIONS
ION WAVES
IONS
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
PERTURBATION THEORY
PHYSICAL PROPERTIES
PLASMA
PLASMA WAVES
THEORETICAL DATA
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES