Obliquely propagating solitary kinetic Alfven wave in a collisional dusty plasma

Journal Article · Sat May 15 04:00:00 EDT 2010 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3425867· OSTI ID:21371162

Woo, M H; Ryu, C -M ^[1]; Choi, C -R ^[2]

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1. Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)
2. Department of Physics, Korea Advanced Institute of Science and Technology, Taejon 305-701 (Korea, Republic of)

An obliquely propagating solitary kinetic Alfven wave in a low beta dusty plasma (beta<<m{sub e}/m{sub i}) is studied by considering the ion motion along the magnetic field and the collisional effect of electrons. The existence condition for a solitary wave for a collisionless dusty plasma is re-examined. It is found that there is an upper limit of the possible Alfvenic Mach velocity, imposed by dust particles. The Mach number lies between l{sub z} and l{sub z}/sq root(N{sub d}), where l{sub z} is the directional cosine and N{sub d} is the dust particle charge density. In the collisional case, the same upper limit of the Mach velocity is found, and the solitary wave turns into an oscillating double layer. The damping scale and the size of the oscillation structure increase with increasing dust particle charge density. The damping scale and the size of the oscillation structure are estimated by using the virial theorem.

• OSTI ID: 21371162
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 17; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
CHARGE DENSITY
CHARGED PARTICLES
COLLISIONAL PLASMA
COLLISIONLESS PLASMA
DAMPING
DIMENSIONLESS NUMBERS
DUSTS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HYDROMAGNETIC WAVES
IONS
LEPTONS
MACH NUMBER
PLASMA
PLASMA SHEATH
QUASI PARTICLES
SOLITONS
VELOCITY
WAVE PROPAGATION