Abstract:
For a plasma embedded in a strong external magnetic field, the spatial structures tend to develop fine scales preferentially across the field, rather than along the parallel direction. This feature, which allowed a major simplification in the theoretical structure of one-fluid magnetohydrodynamics (leading to reduced magnetohydrodynamics), is exploited here to derive what may be called the reduced Hall magnetohydrodynamic equations (RHMHD) reflecting two-fluid effects such as the Hall current and the electron pressure. These physical effects, which can be relevant in astrophysical environments and also in fusion plasmas, allow for the propagation of circularly polarized normal modes such as whistlers and shear/ion-cyclotron waves. In this paper, the RHMHD system of equations is integrated numerically, to investigate externally driven turbulence. © 2008 American Institute of Physics.
Registro:
Documento: |
Artículo
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Título: | Hall magnetohydrodynamics in a strong magnetic field |
Autor: | Gómez, D.O.; Mahajan, S.M.; Dmitruk, P. |
Filiación: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina Institute for Fusion Studies, University of Texas, Austin, TX 78712, United States Instituto de Astronomía y Física del Espacio, C. Universitaria, 1428 Buenos Aires, Argentina
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Palabras clave: | Electron beams; Fluid dynamics; Fusion reactions; Hydrodynamics; Magnetic field effects; Magnetic field measurement; Magnetic fields; Plasma waves; Plasmas; Circularly polarized; Cyclotron waves; Electron pressures; External magnetic fields; Fluid effects; Fusion plasmas; Hall currents; Hall magnetohydrodynamics; Magnetohydrodynamic equations; Normal modes; Physical effects; Reduced magnetohydrodynamics; Spatial structures; Strong magnetic fields; System of equations; Magnetohydrodynamics |
Año: | 2008
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Volumen: | 15
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Número: | 10
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DOI: |
http://dx.doi.org/10.1063/1.2991395 |
Título revista: | Physics of Plasmas
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Título revista abreviado: | Phys. Plasmas
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ISSN: | 1070664X
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CODEN: | PHPAE
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1070664X_v15_n10_p_Gomez |
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Citas:
---------- APA ----------
Gómez, D.O., Mahajan, S.M. & Dmitruk, P.
(2008)
. Hall magnetohydrodynamics in a strong magnetic field. Physics of Plasmas, 15(10).
http://dx.doi.org/10.1063/1.2991395---------- CHICAGO ----------
Gómez, D.O., Mahajan, S.M., Dmitruk, P.
"Hall magnetohydrodynamics in a strong magnetic field"
. Physics of Plasmas 15, no. 10
(2008).
http://dx.doi.org/10.1063/1.2991395---------- MLA ----------
Gómez, D.O., Mahajan, S.M., Dmitruk, P.
"Hall magnetohydrodynamics in a strong magnetic field"
. Physics of Plasmas, vol. 15, no. 10, 2008.
http://dx.doi.org/10.1063/1.2991395---------- VANCOUVER ----------
Gómez, D.O., Mahajan, S.M., Dmitruk, P. Hall magnetohydrodynamics in a strong magnetic field. Phys. Plasmas. 2008;15(10).
http://dx.doi.org/10.1063/1.2991395