Dissipative kinetic Alfvén solitary waves resulting from viscosity

Journal Article · Fri Nov 15 00:00:00 EST 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4834495· OSTI ID:22218419

Choi, C. -R.; Kang, S. -B.; Min, K. -W. ^[1]; Woo, M. -H. ^[2]; Hwang, J.; Park, Y. -D. ^[3]

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1. Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)
2. National Fusion Research Institute, Daejeon 305-333 (Korea, Republic of)
3. Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of)

Nonlinear small-amplitude kinetic Alfvén solitary waves (KASWs) are investigated with their “anomalous” kinetic viscosity effect on electrons. It is found that the structure of a hump-type KASW solution develops into a shock-type (or double layer) KASW solution for large amplitude KASWs when viscosity exists. For small amplitude KASWs, the Korteweg-de Vries (KdV) equation with an approximate pseudopotential was solved, and it is found that the hump-type KASWs develop into oscillating shock-type (kink-type) KASWs. It is also found that the oscillating scale of this structure is related to the propagation velocity and plasma beta, while the damping scale is inversely proportional to the viscosity.

• OSTI ID: 22218419
• Journal Information: Physics of Plasmas, Vol. 20, Issue 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
APPROXIMATIONS
DAMPING
ELECTRONS
KINK INSTABILITY
KORTEWEG-DE VRIES EQUATION
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
PLASMA POTENTIAL
PLASMA SHEATH
PLASMA WAVES
SHOCK WAVES
SOLITONS
VISCOSITY