On the Earth’s magnetic field and the Hall effect

Allen, J. E.

doi:10.5194/npg-10-437-2003

Nonlin. Processes Geophys.

2003

DOI: 10.5194/npg-10-437-2003

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On the Earth’s magnetic field and the Hall effect

J. E. Allen¹

Abstract: Abstract. In a recent paper de Paor put forward a new theory of the Earth's magnetic field that depended on the Hall effect as an energy transfer mechanism. The purpose of this paper is to demonstrate that the mechanism invoked is unimportant except in certain gaseous plasmas.

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2013

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Stability of three-dimensional dust acoustic waves in a dusty plasma with two opposite polarity dust species including dust size distribution

2013

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Propagation of dust acoustic waves (DAWs) with the effect of power law dust size distribution (DSD) in a magnetized dusty plasma with opposite polarity dust is studied. Using a reductive perturbation method, a Zakharov-Kuznetsov equation appropriate for describing three-dimensional DAWs is derived. The compressive and rarefactive solitons are possible in the present model. Due to the DSD effect, a soliton with a smaller amplitude and width and a larger velocity is observed. The stability criterion for obliquely propagating DAWs in such plasma using small-k expansion method is investigated. The growth rate of instability is derived and analyzed under the effect of power law DSD. It is found that the growth rate of instability is strongly affected by the power law DSD. The relevance of these findings to space plasma phenomena is briefly discussed.

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Stability of three-dimensional dust acoustic waves in a dusty plasma with two opposite polarity dust species including dust size distribution

2013

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On the Earth’s magnetic field and the Hall effect

Abstract: Abstract. In a recent paper de Paor put forward a new theory of the Earth's magnetic field that depended on the Hall effect as an energy transfer mechanism. The purpose of this paper is to demonstrate that the mechanism invoked is unimportant except in certain gaseous plasmas.

Cited by 1 publication

References 9 publications

Stability of three-dimensional dust acoustic waves in a dusty plasma with two opposite polarity dust species including dust size distribution

Stability of three-dimensional dust acoustic waves in a dusty plasma with two opposite polarity dust species including dust size distribution

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