On the fully nonlinear acoustic waves in a plasma with positrons beam impact and superthermal electrons

Journal Article · Thu Aug 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4817280· OSTI ID:22227858

Ali Shan, S. ^[1]; El-Tantawy, S. A.; Moslem, W. M. ^[2]

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1. Theoretical Plasma Physics Division, PINSTECH, Nilore, 44000 Islamabad (Pakistan)
2. Department of Physics, Faculty of Science, Port Said University, Port Said 42521 (Egypt)

Arbitrary amplitude ion-acoustic waves in an unmagnetized plasma consisting of cold positive ions, superthermal electrons, and positrons beam are reported. The basic set of fluid equations is reduced to an energy-balance like equation. The latter is numerically analyzed to examine the existence regions for solitary and shock waves. It is found that only solitary waves can propagate, however, the model cannot support shocks. The effects of superthermality and beam parameters (via, positrons concentration and streaming velocity) on the existence region, as well as solitary wave profile have been discussed.

• OSTI ID: 22227858
• Journal Information: Physics of Plasmas, Vol. 20, Issue 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM-PLASMA SYSTEMS
CATIONS
CONCENTRATION RATIO
ELECTROMAGNETIC RADIATION
ELECTRONS
ION ACOUSTIC WAVES
NONLINEAR PROBLEMS
NUMERICAL ANALYSIS
PLASMA FLUID EQUATIONS
POSITRON BEAMS
POSITRONS
SHOCK WAVES
SOLITONS
SOUND WAVES
WAVE PROPAGATION