Title :
Cylindrical and Spherical Ion-Acoustic Shock Waves in Nonextensive Electron-Positron–Ion Plasma
Author :
Ferdousi, Mariya ; Yasmin, Sabina ; Ashraf, Sharmin ; Mamun, A.A.
Author_Institution :
Dept. of Phys., Jahangirnagar Univ., Savar, Bangladesh
Abstract :
The properties of cylindrical and spherical ion-acoustic shock waves in an unmagnetized plasma system consisting of inertial ions, nonextensive electrons, and nonextensive positrons are investigated. A modified Burgers equation is derived using the reductive perturbation technique and its numerical solution is obtained. It is found that the properties of the cylindrical and spherical ion-acoustic shock waves significantly differ from those of 1-D planar shock waves. The findings of this investigation may be used in understanding the wave propagation in laboratory and space plasmas.
Keywords :
numerical analysis; perturbation theory; plasma ion acoustic waves; plasma shock waves; 1-D planar shock waves; cylindrical ion-acoustic shock waves; inertial ions; laboratory plasmas; modified Burgers equation; nonextensive electron-positron-ion plasma; reductive perturbation technique; space plasmas; spherical ion-acoustic shock waves; unmagnetized plasma; wave propagation; Color; Electric shock; Equations; Geometry; Plasmas; Positrons; Shock waves; Burgers's equation; Burgers???s equation; ion-acoustic shock waves (IASHWs); nonextensive electrons; nonextensive positrons; reductive perturbation method; reductive perturbation method.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2014.2384835
