期刊
PHYSICS OF PLASMAS
卷 18, 期 9, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3629981
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资金
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0007953]
- Basic Science Research Program [2010-0023909]
- National Space Laboratory through the National Research Foundation of Korea (NRF) [2008-2003226]
- National Research Foundation of Korea [2010-0007953, 2008-2003226] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 kappa (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. (C) 2011 American Institute of Physics. [doi:10.1063/1.3629981]
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