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Abstract:

We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling. © 2013 AIP Publishing LLC.

Registro:

Documento: Artículo
Título:Intermittency in Hall-magnetohydrodynamics with a strong guide field
Autor:Rodriguez Imazio, P.; Martin, L.N.; Dmitruk, P.; Mininni, P.D.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA, Buenos Aires 1428, Argentina
National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307, United States
Palabras clave:Building structure; Field fluctuations; Intermittency; Ion skin depth; Magnetic field fluctuations; Monofractal; Reduced model; Velocity field; Kinetic theory; Magnetic fields; Probability density function; Velocity; Magnetohydrodynamics
Año:2013
Volumen:20
Número:5
DOI: http://dx.doi.org/10.1063/1.4807378
Título revista:Physics of Plasmas
Título revista abreviado:Phys. Plasmas
ISSN:1070664X
CODEN:PHPAE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1070664X_v20_n5_p_RodriguezImazio

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Citas:

---------- APA ----------
Rodriguez Imazio, P., Martin, L.N., Dmitruk, P. & Mininni, P.D. (2013) . Intermittency in Hall-magnetohydrodynamics with a strong guide field. Physics of Plasmas, 20(5).
http://dx.doi.org/10.1063/1.4807378
---------- CHICAGO ----------
Rodriguez Imazio, P., Martin, L.N., Dmitruk, P., Mininni, P.D. "Intermittency in Hall-magnetohydrodynamics with a strong guide field" . Physics of Plasmas 20, no. 5 (2013).
http://dx.doi.org/10.1063/1.4807378
---------- MLA ----------
Rodriguez Imazio, P., Martin, L.N., Dmitruk, P., Mininni, P.D. "Intermittency in Hall-magnetohydrodynamics with a strong guide field" . Physics of Plasmas, vol. 20, no. 5, 2013.
http://dx.doi.org/10.1063/1.4807378
---------- VANCOUVER ----------
Rodriguez Imazio, P., Martin, L.N., Dmitruk, P., Mininni, P.D. Intermittency in Hall-magnetohydrodynamics with a strong guide field. Phys. Plasmas. 2013;20(5).
http://dx.doi.org/10.1063/1.4807378