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

被引：0
|
作者：
A. E. Dubinov
M. A. Sazonkin
机构：
[1] Sarov State Physical and Technical Institute,
来源：
Plasma Physics Reports | 2009年 / 35卷
关键词：
52.27.Ep; 52.35.Fp;
D O I：
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学科分类号：
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.
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页码：14 / 24
页数：10
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