Author:
MAJUMDAR S. R.,PAUL S. N.,DAS K. P.
Abstract
Higher-order nonlinear and dispersive effects on ion-acoustic solitons in
a plasma consisting of two types of cold positive ions and two-temperature non-isothermal
electrons are studied using a reductive perturbation method. An integrated
form of the basic sets of fluid equations consisting of two types of positive
ions and two types of non-isothermal electrons is derived in terms of a pseudo-potential.
A perturbation solution of this equation is obtained by the Bogoliubov–Mitropolsky method.
At the lowest order, we obtain a modified Korteweg–de Vries
solitary-wave solution, which has a sech4 profile. Calculations are carried out at
the next two higher orders. The secularity-removing condition at each order gives
a correction to the velocity of the solitary wave at the corresponding order. The
variations of Mach number and width of the ion-acoustic soliton with amplitude at
each order are shown graphically for plasmas with H+ and He+ or with He+ and
Ar+ ions, with two-temperature non-isothermal electrons.
Publisher
Cambridge University Press (CUP)
Cited by
7 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献