Nonplanar Electrostatic Solitary Waves in a Relativistic Degenerate Dense Plasma  

作　　者：Ata-ur-Rahman A. Mushtaq S. Ali A. Qamar 

机构地区：[1]Institute of Physics & Electronics, University of Peshawar [2]National Center for Physics, Shahdrah Valley Road [3]Department of Physics, Abdul Wali Khan University

出　　处：《Communications in Theoretical Physics》2013年第4期479-483,共5页理论物理通讯（英文版）

基　　金：the Financial Support of HEC Through Indigenous 5000 Ph.D Scholarship Scheme

摘　　要：By employing the reductive perturbation technique, the propagation of cylindrical and spherical ion acoustic solitary waves is studied in an unmagnetized dense relativistic plasma, consisting of relativistically degenerate electrons and cold fluid ions. A modified Korteweg-de-Vries equation is derived and its numerical solutions have been analyzed to identify the basic features of electrostatic solitary structures that may form in such a degenerate Fermi plasma. Different degrees of relativistic electron degeneracy are discussed and compared. It is found that increasing number density leads to decrease the aznplitude the width of the ion acoustic solitary wave in both the cylindrical and spherical geometries. The relevance of the work to the compact astrophysical objects, particularly white dwarfs is pointed out.

关 键 词：nonplanar ion acoustic solitary waves relativistic degenerate plasma modified KdV equation 

分 类 号：O53[理学—等离子体物理] O412.1[理学—物理]