Splitting of the modes of a low-frequency magnetosonic wave in a polydisperse dusty plasma

Journal Article · Wed Dec 15 04:00:00 EST 2010 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X10120032· OSTI ID:21443358

Prudskikh, V V ^[1]

---

1. Southern Federal University, Research Institute of Physics (Russian Federation)

The properties of magnetosonic waves that propagate perpendicularly to the external magnetic field in a polydisperse dusty plasma and the frequencies of which are about the dust cyclotron frequency are analyzed. A dispersion relation containing integrals of functions of the dust grain radius is derived and investigated as a function of the parameters characterizing the polydisperse properties of dust. It is found that, in a polydisperse dusty plasma, the low-frequency magnetosonic mode splits into two branches. The first, lower frequency branch has a cutoff, while the higher frequency branch has a resonance. Between the two branches, there is a forbidden frequency range within which electromagnetic waves cannot propagate perpendicular to the magnetic field. The width of the forbidden frequency range is determined as a function of the slope of the distribution function of dust grains over radii and the interval within which the dust grain radii lie.

• OSTI ID: 21443358
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 12 Vol. 36; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DISPERSION RELATIONS
DISTRIBUTION FUNCTIONS
DUSTS
ELECTROMAGNETIC RADIATION
FREQUENCY RANGE
FUNCTIONS
HYDROMAGNETIC WAVES
MAGNETIC FIELDS
MAGNETOACOUSTIC WAVES
PLASMA
RADIATIONS
WAVE PROPAGATION