Original scientific paper

On the problem of self-focussing and transversal stability in a magnetised plasma with streaming ions

K. Kr. Mondal ; Department of Physics, Raja Peary Mohan College, Dist. Hooghly, West Bengal, India, Pin-712 258
A. Roychowdhury ; Department of Physics, Meghnad Saha Institute of Technology, Near NRI Complex, Behind Ruby Hospital, Calcutta-7000150, India
S. N. Paul ; Centre for Science Education and Research, B/4, Shyamali Housing Estate, Salt Lake City, Calcutta-700064

Abstract

Linear and nonlinear propagation of ion-acoustic waves are theoretically investigated in a multicomponent plasma consisting of electrons, positive ions and negative ions bounded in a cylindrical waveguide. The stability of the ion-acoustic wave is discussed taking into account the role of finite geometry and the concentration of negative ions of the plasma. The effect of nonlinearity on the ion-acoustic wave is investigated through the derivation of the effective potential (Sagdeev potential) and the results are discussed graphically with the variation of ion-streaming and the geometry of the bounded plasma.

Keywords

negative-ion plasma; ion-acoustic solitary wave; finite geometry

Hrčak ID:

301744

URI

https://hrcak.srce.hr/301744

Publication date:

2.5.2004.

Article data in other languages: croatian

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