Nonlinear theory of ion-acoustic waves in an electron-positron-ion plasma

被引：46

作者：

Dubinov, A. E. ^{[1
]}

Sazonkin, M. A. ^{[1
]}

机构：

[1] Sarov State Phys & Tech Inst, Sarov 607186, Nizhni Novgorod, Russia

来源：

PLASMA PHYSICS REPORTS | 2009年 / 35卷 / 01期

关键词：

INTENSE ELECTROMAGNETIC-WAVES; SHEAR ALFVEN-WAVE; SOLITONS; DENSITY; TEMPERATURE; EVOLUTION; RADIATION; DRIVEN;

D O I：

10.1134/S1063780X09010024

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

An analytical nonlinear gasdynamic theory of ion-acoustic waves in an e-p-i plasma is developed for the case in which all the plasma components in the wave undergo polytropic compression and rarefaction. An exact solution to the basic equations is found and analyzed by the Bernoulli pseudopotential method. The parameter range in which periodic waves can propagate and the range in which solitary waves (solitons) exist are determined. It is shown that the propagation velocity of a solitary is always higher than the linear ion sound velocity. The profiles of all the physical quantities in both subsonic and supersonic waves are calculated. The results obtained agree well with both the data from other papers and particular limiting cases.

引用

页码：14 / 24

页数：11

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