Higher order contribution to
the propagation
characteristics of low
frequency transverse
waves in a dusty plasma
A P MISRA1, A ROY CHOWDHURY1 and S N PAUL2
1High Energy Physics Division, Department of Physics, Jadavpur
University,
Kolkata 700 032, India
2Faculty of Science, Serampore Girls' College, Hoogly 712 201, India
E-mail: arcphy@cal2.vsnl.net.in;
sailenpaul@redi®mail.com
Abstract. Characteristic features of low frequency transverse wave propagating in
a
magnetised dusty plasma have been analysed
considering the effect of dust-charge fluctu-
ation. The distinctive behaviours of both the
left circularly polarised and right circularly
polarised waves have been exhibited through
the analysis of linear and non-linear disper-
sion relations. The phase velocity, group
velocity, and group travel time for the waves have
been obtained and their propagation
characteristics have been shown graphically with the
variations of wave frequency, dust density and
amplitude of the wave. The change in
non-linear wave number shift and Faraday
rotation angle have also been exhibited with
respect to the plasma parameters. It is
observed that the effects of dust particles are
significant only when the higher order
contributions are considered. This may be referred
to as the `dust regime' in plasma.
Keywords. Dust plasma; transverse wave; group travel time; Faraday rotation
angle;
non-linear wave number shift.