Magnetohydrodynamic spin waves in degenerate electron-positron-ion plasmas

Journal Article · Tue May 15 04:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4714602· OSTI ID:22072319

Mushtaq, A ^[1]; Maroof, R; Ahmad, Zulfiaqr ^[2]; Qamar, A ^[3]

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1. TPPD, PINSTECH Nilore, 44000 Islamabad (Pakistan)
2. Institute of Physics and Electronics, University of Peshawar, 25000 Peshawar (Pakistan)
3. National Center for Physics, Shahdrah Valley Road, 44000 Islamabad (Pakistan)

Low frequency magnetosonic waves are studied in magnetized degenerate electron-positron-ion plasmas with spin effects. Using the fluid equations of magnetoplasma with quantum corrections due to the Bohm potential, temperature degeneracy, and spin magnetization energy, a generalized dispersion relation for oblique magnetosonic waves is derived. Spin effects are incorporated via spin force and macroscopic spin magnetization current. For three different values of angle {theta}, the generalized dispersion relation is reduced to three different relations under the low frequency magnetohydrodynamic assumptions. It is found that the effect of quantum corrections in the presence of positron concentration significantly modifies the dispersive properties of these modes. The importance of the work relevant to compact astrophysical bodies is pointed out.

• OSTI ID: 22072319
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASTROPHYSICS
BOHM CRITERION
CORRECTIONS
DISPERSION RELATIONS
ELECTRONS
FLOW MODELS
IONS
MAGNETIZATION
MAGNETOACOUSTIC WAVES
MAGNETOHYDRODYNAMICS
PLASMA
POSITRONS
POTENTIALS
SPIN WAVES