New exact solutions for nonlinear solitary waves in Thomas-Fermi plasmas with ( G'/ G)-expansion method

Details New exact solutions for nonlinear solitary waves in Thomas-Fermi plasmas with ( G'/ G)-expansion method New exact solutions for nonlinear solitary waves in Thomas-Fermi plasmas with ( G'/ G)-expansion method

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012ap%26ss.337..269m&link_type=abstract

Astrophysics and Space Science, Volume 337, Issue 1, pp.269-274

Astronomy and Astrophysics

Astrophysics

Scientific paper

The nonlinear propagation of ion acoustic waves in an ideal plasmas containing degenerate electrons is investigated. The Korteweg-de-Vries (K-dV) equation is derived for ion acoustic waves by using reductive perturbation method. The analytical traveling wave solutions of the K-dV equation investigated, through the ( G'/ G)-expansion method. These traveling wave solutions are expressed by hyperbolic function, trigonometric functions are rational functions. When the parameters are taken special values, the solitary waves are derived from the traveling waves. Also, numerically the effect different parameters on these solitary waves investigated and it is seen that exist only the compressive solitary waves in Thomas-Fermi plasmas.

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