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Dispersion properties of compressional electromagnetic waves in quantum dusty magnetoplasmas
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik. Institut für Theoretische Physik IV and Centre for Plasma Science and Astrophysics, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany; Max-Planck Institut für extraterrestrische Physik, D-85741 Garching, Germany; GoLP/Instituto Superior Técnico, 1049-001 Lisbon, Portugal; Centre for Fundamental Physics, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon 0X11 0QX, United Kingdom; Department of Physics, University of Strathclyde, Glasgow, Scotland, United Kingdom.
2006 (engelsk)Inngår i: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 13, nr 5, artikkel-id 052113Artikkel i tidsskrift (Fagfellevurdert) Published
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Abstract [en]

A new dispersion relation for low-frequency compressional electromagnetic waves is derived by employing quantum magnetohydrodynamic model and Maxwell equations in cold quantum dusty magnetoplasmas. The latter is composed of inertialess electrons, mobile ions, and immobile charged dust particulates. The dispersion relation for the low-frequency compressional electromagnetic modes is further analyzed for the waves propagating parallel, perpendicular, and oblique to the external magnetic field direction. It is found theoretically and numerically that the quantum parameter alpha(q)=(n(i0)/n(e0))h(2)/(4m(e)m(i)) affects the real angular frequencies and the phase speeds of the compressional electromagnetic modes. Here, n(i0) (n(e0)) is the equilibrium number density of the ions (electrons), m(e) (m(i)) is the electron (ion) mass, and h is the Plank constant divided by 2 pi.

sted, utgiver, år, opplag, sider
Melville: American Institute of Physics (AIP), 2006. Vol. 13, nr 5, artikkel-id 052113
Emneord [en]
ion-acoustic waves, plasmas, model, simulation, equations
HSV kategori
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URN: urn:nbn:se:umu:diva-119398DOI: 10.1063/1.2201535ISI: 000237943000014OAI: oai:DiVA.org:umu-119398DiVA, id: diva2:927136
Tilgjengelig fra: 2016-05-11 Laget: 2016-04-18 Sist oppdatert: 2018-06-07bibliografisk kontrollert

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