TITLE

Electrostatic Korteweg-deVries solitary waves in a plasma with Kappa-distributed electrons

AUTHOR(S)
Choi, C.-R.; Min, K.-W.; Rhee, T.-N.
PUB. DATE
September 2011
SOURCE
Physics of Plasmas;Sep2011, Vol. 18 Issue 9, p092901
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The Korteweg-deVries (KdV) equation that describes the evolution of nonlinear ion-acoustic solitary waves in plasmas with Kappa-distributed electrons is derived by using a reductive perturbation method in the small amplitude limit. We identified a dip-type (negative) electrostatic KdV solitary wave, in addition to the hump-type solution reported previously. The two types of solitary waves occupy different domains on the κ (Kappa index)-V (propagation velocity) plane, separated by a curve corresponding to singular solutions with infinite amplitudes. For a given Kappa value, the dip-type solitary wave propagates faster than the hump-type. It was also found that the hump-type solitary waves cannot propagate faster than V = 1.32.
ACCESSION #
66184792

 

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