Ion-neutral collision effect on an Alfven wave

Journal Article · Mon Jul 19 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.360· OSTI ID:6071991

Amagishi, Y; Tanaka, M ^[1]

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1. Faculty of Liberal Arts, Shizuoka University, 836 Ohya, Shizuoka 422 (Japan) Department of High Energy Engineering Science, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816 (Japan)

This paper reports that ion-neutral collisions in a magnetized plasma cause a drastic change in the dispersion relation of the shear Alfven wave with poloidal mode number [ital m]=0, connecting to the branch of the [ital m]=+1 compressional Alfven wave at frequencies below the ion-cyclotron frequency. An anomaly of the dispersion then appears on the refractive index curve and a wave packet in this frequency range undergoes strong amplitude damping and profile deformation. It is confirmed that the Kramers-Kronig relation holds for the dielectric function, estimated from both the measured refractive index and damping rate.

• OSTI ID: 6071991
• Journal Information: Physical Review Letters; (United States), Vol. 71:3; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONAL PLASMA
DISPERSION RELATIONS
ALFVEN WAVES
COMPRESSION
CYCLOTRON FREQUENCY
DAMPING
DIELECTRIC PROPERTIES
ION WAVES
ION-ATOM COLLISIONS
KRAMERS-KRONIG CORRELATION
MAGNETIZATION
REFRACTIVITY
SHEAR
ATOM COLLISIONS
COLLISIONS
CORRELATIONS
ELECTRICAL PROPERTIES
HYDROMAGNETIC WAVES
ION COLLISIONS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA
PLASMA WAVES
700340* - Plasma Waves
Oscillations
& Instabilities- (1992-)