Large amplitude dust ion acoustic solitons: considering dust polarity and nonextensive electrons

Authors

1 Department of Physics, Ferdowsi University of Mashhad, 91775-1436, Mashhad, Iran

2 Department of Physics, Islamic Azad University,Mashhad Branch, Mashhad, Iran

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 definite 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


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