Kd. Tripathi et Sk. Sharma, DISPERSION PROPERTIES OF LOW-FREQUENCY WAVES IN MAGNETIZED DUSTY PLASMAS WITH DUST SIZE DISTRIBUTION, Physics of plasmas, 3(12), 1996, pp. 4380-4385
Dispersion properties of some low-frequency modes in magnetized dusty
plasmas have been investigated theoretically, taking into account the
dust size distribution. In contrast to earlier work on dispersion prop
erties of different modes in magnetized dusty plasmas with a single du
st size, it is assumed that the dust grains are distributed in size. A
ssuming that the dust size is given by a power law distribution, with
a nonzero minimum and finite maximum grain size, the effect of dust si
ze distribution on the dispersion properties of some electrostatic and
electromagnetic modes in magnetized dusty plasmas is investigated. It
is seen that in the very low-frequency (VLF) regime, taking into acco
unt the size distribution leads to a new kind of damping for an electr
ostatic dust-cyclotron and right-handed circularly polarized (RCP) ele
ctromagnetic Alfven mode, whereas the left-handed circularly polarized
(LCP) Alfven mode remains undamped. In the low-frequency (LF) regime,
size distribution results only in the modification of the dispersion
relations for all the modes. (C) 1996 American Institute of Physics.