Effects of ion-fluid temperature on dust-ion-acoustic solitons
FATEMA SAYED* and A A
MAMUN
Department of Physics,
*Corresponding author. E-mail:
shilpee\_36@yahoo.com
Abstract. The
properties of dust-ion-acoustic (DIA) solitons in an
unmagnetized
dusty plasma, whose constituents are adiabatic
ion-fluid, Boltzmann
electrons, and static dust particles, are
investigated by employing the
reductive perturbation method. The
Korteweg--de Vries
equation is derived and its stationary solution is
numerically analyzed. The
parametric regimes for the existence of
positive and negative solitons are found. It has been shown that
ion-fluid temperature not only
significantly modifies the basic
features (width and amplitude) of
DIA solitons, but also introduces
some new features of DIA solitons.
Keywords. Dusty plasmas; dust-ion-acoustic solitons; reductive
perturbation method.
PACS Nos 52.27.Lw; 52.35.Mw; 52.35.Sb