Author/Authors :
Pakzad, Hamid Reza Department of Physics - Ferdowsi University of Mashhad, Mashhad , Eslami, Parvin Department of Physics - Ferdowsi University of Mashhad, Mashhad , Khorshid, Pejman Department of Physics - Islamic Azad University - Mashhad Branch, Mashhad , Javidan, Kurosh Department of Physics - Ferdowsi University of Mashhad, Mashhad
Abstract :
The characteristics of arbitrary amplitude dust ion acoustic solitary waves
(DIASWs) are studied in unmagnetized dusty plasmas whose constituents are cold
uid ions, nonextensive electrons and stationary negative/positive dust particles. The
pseudopotential approach has been used to investigate the structure of localized waves.
It is found that, solitary waves exist in a denite interval for the Mach number which
depends sensitively to the electron nonextensivity and dust polarity. Our results can
be useful to understand the properties of localized electrostatic disturbances that may
occur in astrophysical and space dusty plasmas.
Keywords :
Dust Ion Acoustic Soliton , Sagdeev Potential , Nonextensive Electrons , Dust Polarity
