Ion acoustic waves in plasmas with collisional electrons

Journal Article · Thu Dec 01 00:00:00 EST 1994 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States)

DOI:https://doi.org/10.1103/PhysRevE.50.5134· OSTI ID:6880130

Bychenkov, V Y; Myatt, J; Rozmus, W; Tikhonchuk, V T ^[1]

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1. Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2J1 (Canada)

We have developed an analytical theory of ion acoustic wave (IAW) damping and electron heat conductivity in plasmas with an arbitrary electron collisionality. We have found that deviations from the collisionless electron Landau damping occur for the wave numbers [ital k][lambda][sub [ital e][ital i]][similar to][ital Z][sup 2/3], where [lambda][sub [ital e][ital i]] is the electron mean free path for collisions with ions. In the regime of intermediate collisionality the IAW damping is proportional to [ital k][sup 4/7] and the nonlocal electron heat conductivity is proportional to [ital k][sup [minus]4/7]. The transition into the hydrodynamic regime occurs for [ital k][lambda][sub [ital e][ital i]][similar to]0.1[ital Z][sup 1/2].

• OSTI ID: 6880130
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States), Vol. 50:6; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONAL PLASMA
ION ACOUSTIC WAVES
THERMAL CONDUCTIVITY
DISTRIBUTION FUNCTIONS
ELECTRONS
KINETIC EQUATIONS
LANDAU DAMPING
TRANSPORT THEORY
DAMPING
ELEMENTARY PARTICLES
EQUATIONS
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FUNCTIONS
ION WAVES
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