Modification and damping of Alfvén waves in a magnetized dusty plasma

• Published in: Journal of the Physical Society of Japan Vol. 64; no. 10; pp. 3758 - 3766
• Main Authors: MOHAMMAD SALIMULLAH, BRAHMANANDA DASGUPTA, WATANABE, K, SATO, T
• Format: Journal Article
• Language: English
• Published: Tokyo Institute of Pure and Applied Physics 1995; Physical Society of Japan; The Physical Society of Japan
• Subjects: Exact sciences and technology; Impurities in plasmas; Magnetohydrodynamic waves; Magnetohydrodynamic waves (e.g., alfven waves); Physics; Physics of gases, plasmas and electric discharges; Physics of plasmas and electric discharges; Plasma kinetic equations; Plasma properties; Waves, oscillations, and instabilities in plasmas and intense beams; Damping; Alfven waves; Plasma; Wave propagation; Circular polarization; Dusts; Dispersion relations; Theoretical study; Vlasov equation; Magnetic fields
• ISSN: 0031-9015; 1347-4073
• DOI: 10.1143/JPSJ.64.3758

The dispersion characteristics of the circularly polarized electromagnetic waves propagating along a homogeneous magnetic field in a dusty plasma have been investigated theoretically. The Vlasov equation has been employed to find the response of the magnetized plasma particles where the dust grains form a static background of highly charged and massive centers having certain correlation. It is found that in addition to the usual Landau damping which is negligible in the low temperature approximation, a novel mechanism of damping of the Alfvén waves due to the dust comes into play. The modification and damping of the Alfvén waves depend on the dust perturbation parameters, unequal densities of plasma particles, the average correlation length of the dust grains, temperature of the plasma and the magnetic field.