Journal
PHYSICS OF PLASMAS
Volume 21, Issue 3, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4867490
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Funding
- Higher Education Commission of Pakistan, under the International Research Support Initiative Program (IRSIP) [1-8/HEC/HRD/2011/1722]
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We have derived the electrostatic dispersion relation in a magnetized plasma using a recently developed quantum kinetic model based on the Dirac equation. The model contains weakly relativistic spin effects such as Thomas precession, the polarization currents associated with the spin and the spin-orbit coupling. It turns out that for strictly electrostatic perturbations the non-relativistic spin effects vanish, and the modification of the classical dispersion relation is solely associated with the relativistic terms. Several new wave modes appear due the electron spin effects, and an example for astrophysical plasmas are given. (C) 2014 AIP Publishing LLC.
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