Electron magneto-hydrodynamic waves bounded by magnetic bubble

被引：1

作者：

Anitha, V. P. ^{[1
]}

Sharma, D. ^{[1
]}

Banerjee, S. P. ^{[1
]}

Mattoo, S. K. ^{[1
]}

机构：

[1] Inst Plasma Res, Bhat 382428, Gandhinagar, India

来源：

PHYSICS OF PLASMAS | 2012年 / 19卷 / 08期

关键词：

HELICON WAVES; PLASMA SOURCE; WHISTLERS; EXCITATION; ANTENNAS; FIELDS;

D O I：

10.1063/1.4748573

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4748573]

引用

页数：8

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