Nonplanar positron-acoustic Gardner solitary waves in electron-positron-ion plasmas with superthermal electrons and positrons

Journal Article · Sun Feb 15 00:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4907226· OSTI ID:22408064

Alam, M. S.; Mamun, A. A. ^[1]

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1. Department of Physics, Jahangirnagar University, Savar, Dhaka-1342 (Bangladesh)

Nonplanar (cylindrical and spherical) positron-acoustic (PA) Gardner solitary waves (SWs) in an unmagnetized plasma system consisting of immobile positive ions, mobile cold positrons, and superthermal (kappa distributed) hot positrons and electrons are investigated. The modified Gardner equation is derived by using the reductive perturbation technique. The effects of cylindrical and spherical geometries, superthermal parameter of hot positrons and electrons, relative temperature ratios, and relative number density ratios on the PA Gardner SWs are studied by using the numerical simulations. The implications of our results in various space and laboratory plasma environments are briefly discussed.

• OSTI ID: 22408064
• Journal Information: Physics of Plasmas, Vol. 22, Issue 2; Other Information: (c) 2015 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
CATIONS
COMPUTERIZED SIMULATION
CYLINDRICAL CONFIGURATION
ELECTRONS
EQUATIONS
PERTURBATION THEORY
PLASMA
POSITRONS
SPHERICAL CONFIGURATION