Effects of nonextensivity on the electron-acoustic solitary structures in a magnetized electron−positron−ion plasma

Journal Article · Mon Aug 15 04:00:00 EDT 2016 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X16080092· OSTI ID:22614092

Rahman, M. M.; Alam, M. S.; Mamun, A. A. ^[1]

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1. Jahangirnagar University, Department of Physics (Bangladesh)

Obliquely propagating electron-acoustic solitary waves (EASWs) in a magnetized electron−positron−ion plasma (containing nonextensive hot electrons and positrons, inertial cold electrons, and immobile positive ions) are precisely investigated by deriving the Zakharov–Kuznetsov equation. It is found that the basic features (viz. polarity, amplitude, width, phase speed, etc.) of the EASWs are significantly modified by the effects of the external magnetic field, obliqueness of the system, nonextensivity of hot positrons and electrons, ratio of the hot electron temperature to the hot positron temperature, and ratio of the cold electron number density to the hot positron number density. The findings of our results can be employed in understanding the localized electrostatic structures and the characteristics of EASWs in various astrophysical plasmas.

• OSTI ID: 22614092
• Journal Information: Plasma Physics Reports, Journal Name: Plasma Physics Reports Journal Issue: 8 Vol. 42; ISSN PPHREM; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
ASTROPHYSICS
CATIONS
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTRONS
ELECTROSTATICS
EQUATIONS
ION ACOUSTIC WAVES
MAGNETIC FIELDS
PHASE VELOCITY
PLASMA
POSITRONS
WAVE PROPAGATION