Stability of an elliptical vortex in a strongly coupled dusty plasma

Journal Article · Sat Aug 15 00:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4928377· OSTI ID:22490101

Jana, Sayanee; Banerjee, Debabrata; Chakrabarti, Nikhil ^[1]

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1. Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064 (India)

The stability of a long scale equilibrium vortex structure to short scale perturbations is studied in a strongly coupled dusty plasma in the framework of a generalized hydrodynamic model. It is shown that the free energy associated with the velocity shear of the vortex can drive secondary instabilities consisting of transverse shear waves when the resonance condition between the vortex rotation frequency and the secondary wave frequency is met. Such a process can transfer energy from the long scale vortex to the short scale secondary wave and thereby provide a saturation mechanism for long scale vortices in plasmas in a manner analogous to that in neutral fluids.

• OSTI ID: 22490101
• Journal Information: Physics of Plasmas, Vol. 22, Issue 8; Other Information: (c) 2015 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
DISTURBANCES
ENERGY TRANSFER
EQUILIBRIUM
FREE ENERGY
HYDRODYNAMIC MODEL
PLASMA
PLASMA INSTABILITY
RESONANCE
ROTATING PLASMA
SHEAR
STABILITY
STRONG-COUPLING MODEL
VORTICES