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Title: Oblique propagation of ion acoustic soliton-cnoidal waves in a magnetized electron-positron-ion plasma with superthermal electrons

The oblique propagation of ion-acoustic soliton-cnoidal waves in a magnetized electron-positron-ion plasma with superthermal electrons is studied. Linear dispersion relations of the fast and slow ion-acoustic modes are discussed under the weak and strong magnetic field situations. By means of the reductive perturbation approach, Korteweg-de Vries equations governing ion-acoustic waves of fast and slow modes are derived, respectively. Explicit interacting soliton-cnoidal wave solutions are obtained by the generalized truncated Painlevé expansion. It is found that every peak of a cnoidal wave elastically interacts with a usual soliton except for some phase shifts. The influence of the electron superthermality, positron concentration, and magnetic field obliqueness on the soliton-cnoidal wave are investigated in detail.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
  2. Department of Physics and Electronics, Shangrao Normal University, Jiangxi, Shangrao 334001 (China)
  3. Institute of Nonlinear Science, Shaoxing University, Shaoxing 312000 (China)
Publication Date:
OSTI Identifier:
22251938
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DISPERSION RELATIONS; ELECTRONS; ION ACOUSTIC WAVES; IONS; KORTEWEG-DE VRIES EQUATION; MAGNETIC FIELDS; MATHEMATICAL SOLUTIONS; PERTURBATION THEORY; PHASE SHIFT; POSITRONS; SOLITONS