Propagation modes of extraordinary wave in magnetized quantum plasma with electron spin-1/2 and exchange correlation effects

Publication date: Available online 5 September 2018Source: Physics Letters AAuthor(s): Tripti RimzaAbstractThe dispersion properties of high-frequency elliptically polarized electromagnetic wave is studied in electron–ion spin-1/2 quantum plasma with exchange effect. The quantum magnetohydrodynamic set of equations is used to derive the dispersion relation of extraordinary wave which is found to be modified due to combined effect of spin and exchange correlation potential. The dispersion relation is further discussed for two possible modes of propagation namely lower branch and upper branch of extraordinary wave. The dispersion curve shows that at higher wavelength side the spin and exchange potential decrease the frequency of upper branch while the frequency of lower branch of extraordinary wave is increased due to these effects. Interpretation of numerical results exhibits the specific role of spin force and exchange potential on the cutoff and resonance frequencies in the short and long wavelength regime. The application of the work is for dense astrophysical environments and for laboratory fusion experiments.
Source: Physics Letters A - Category: Physics Source Type: research