期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：5
页码：12094
出版社：S&S Publications
摘要：In presence o f multicomponent ionic plasma, more than one plasma so und waves are possible depending on the number of ions. In this work, we co nsidered the presence of a negative ion along with the normal pos itive ion. Here we show that finite but weak electron inertial delay effect causes a resonant excitation of the ion acoustic solitons near the transo nic zone, which depends on . . 2 , 1 i e m m . ratio. It has been seen that under such situation near the plasma sheath transonic zone, the KdV equations have complex coefficients. We have shown that even in presence of the co mplex coefficients soliton like solution can be derived only for infinitely lo ng wavelength source perturbation. It is seen that when the negative ions mass becomes equal to that of a dust particle then similar excitation situation as in case of colloidal plasma can be retrieved. It is plausible that such kind of a resonant excitat ion may lead to acoustic turbulence near the plasma sheath ed ge. A detailed discussion of the nonlinear acoustic mode analyses in the transonic regime with negative ionic impurity using a hydrod ynamic approach is presented.
