Remarkable paramagnetic features of Fermi-Dirac-Pauli plasmas

Akbari-Moghanjoughi, M

doi:10.1063/1.3601761

Title: Remarkable paramagnetic features of Fermi-Dirac-Pauli plasmas

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Abstract

In this paper by using the relativistic magnetic susceptibility of a Fermi-Dirac (relativistically degenerate) plasma, quantum magnetohydrodynamics model is used to investigate the propagation of spin-induced (SI) magnetosonic nonlinear excitations in a normally and relativistically degenerate dense electron-ion plasma in the presence of the spin magnetization effect. Based on the conventional pseudopotential method the matching criterion for the evolution of SI solitary structures is evaluated. It is found that, the plasma mass density and strength of the magnetic field have significant effects on excitation and evolution of magnetosonic nonlinear structures in Fermi-Dirac plasmas. Only rarefactive SI magnetosonic solitary structures are found to excite in such plasmas. Furthermore, fundamental differences are shown to exist in magnetosonic soliton dynamics in the two distinct plasma degeneracy regimes, which are due to interplay between the negative pressure-like paramagnetism and positive relativistic degeneracy pressure of electrons. Current investigation can help better understand the electron spin effects on nonlinear wave propagations in strongly magnetized dense astrophysical objects such as white dwarfs and pulsar magnetospheres.

Authors:

Akbari-Moghanjoughi, M ^[1]

Azarbaijan University of Tarbiat Moallem, Faculty of Sciences, Department of Physics, 51745-406 Tabriz (Iran, Islamic Republic of)

Publication Date:: Fri Jul 15 00:00:00 EDT 2011

OSTI Identifier:: 22046887

Resource Type:: Journal Article

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 18; Journal Issue: 7; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; ELECTRONS; EXCITATION; MAGNETIC FIELDS; MAGNETIC SUSCEPTIBILITY; MAGNETIZATION; MAGNETOHYDRODYNAMICS; NONLINEAR PROBLEMS; PARAMAGNETISM; PLASMA WAVES; PULSARS; QUANTUM MECHANICS; RELATIVISTIC PLASMA; RELATIVISTIC RANGE; SOLITONS; SPIN; WAVE PROPAGATION; WHITE DWARF STARS

Citation Formats


                    Akbari-Moghanjoughi, M. Remarkable paramagnetic features of Fermi-Dirac-Pauli plasmas.  United States: N. p., 2011. 
        Web.  doi:10.1063/1.3601761.

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                    Akbari-Moghanjoughi, M. Remarkable paramagnetic features of Fermi-Dirac-Pauli plasmas.  United States.  https://doi.org/10.1063/1.3601761

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                    Akbari-Moghanjoughi, M. 2011.  
        "Remarkable paramagnetic features of Fermi-Dirac-Pauli plasmas".  United States.  https://doi.org/10.1063/1.3601761.

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@article{osti_22046887,

  title        = {Remarkable paramagnetic features of Fermi-Dirac-Pauli plasmas},

  author       = {Akbari-Moghanjoughi, M},

  abstractNote = {In this paper by using the relativistic magnetic susceptibility of a Fermi-Dirac (relativistically degenerate) plasma, quantum magnetohydrodynamics model is used to investigate the propagation of spin-induced (SI) magnetosonic nonlinear excitations in a normally and relativistically degenerate dense electron-ion plasma in the presence of the spin magnetization effect. Based on the conventional pseudopotential method the matching criterion for the evolution of SI solitary structures is evaluated. It is found that, the plasma mass density and strength of the magnetic field have significant effects on excitation and evolution of magnetosonic nonlinear structures in Fermi-Dirac plasmas. Only rarefactive SI magnetosonic solitary structures are found to excite in such plasmas. Furthermore, fundamental differences are shown to exist in magnetosonic soliton dynamics in the two distinct plasma degeneracy regimes, which are due to interplay between the negative pressure-like paramagnetism and positive relativistic degeneracy pressure of electrons. Current investigation can help better understand the electron spin effects on nonlinear wave propagations in strongly magnetized dense astrophysical objects such as white dwarfs and pulsar magnetospheres.},

  doi          = {10.1063/1.3601761},

  url          = {https://www.osti.gov/biblio/22046887},
  journal      = {Physics of Plasmas},

  issn         = {1070-664X},

  number       = 7,

  volume       = 18,

  place        = {United States},

  year         = {Fri Jul 15 00:00:00 EDT 2011},

  month        = {Fri Jul 15 00:00:00 EDT 2011}

}

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