Electron magneto-hydrodynamic waves bounded by magnetic bubble

Journal Article · Wed Aug 15 00:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4748573· OSTI ID:22086009

Anitha, V P; Sharma, D; Banerjee, S P; Mattoo, S K ^[1]

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1. Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

The propagation of electron magneto-hydrodynamic (EMHD) waves is studied experimentally in a 3-dimensional region of low magnetic field surrounded by stronger magnetic field at its boundaries. We report observations where bounded left hand polarized Helicon like EMHD waves are excited, localized in the region of low magnetic field due to the boundary effects generated by growing strengths of the ambient magnetic field rather than a conducting or dielectric material boundary. An analytical model is developed to include the effects of radially nonuniform magnetic field in the wave propagation. The bounded solutions are compared with the experimentally obtained radial wave magnetic field profiles explaining the observed localized propagation of waves.

• OSTI ID: 22086009
• Journal Information: Physics of Plasmas, Vol. 19, Issue 8; Other Information: (c) 2012 American Institute of Physics; 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
ANALYTIC FUNCTIONS
BUBBLES
DIELECTRIC MATERIALS
ELECTRONS
HELICON WAVES
HYDROMAGNETIC WAVES
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MATHEMATICAL SOLUTIONS
PLASMA WAVES
THREE-DIMENSIONAL CALCULATIONS
WAVE PROPAGATION