Electron acoustic waves in a magnetized plasma with kappa distributed ions

Journal Article · Wed Aug 15 00:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4743015· OSTI ID:22086024

Devanandhan, S; Lakhina, G S ^[1]; Singh, S V ^[1]; Bharuthram, R ^[2]

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1. Indian Institute of Geomagnetism, Navi Mumbai (India)
2. University of the Western Cape, Bellville (South Africa)

Electron acoustic solitary waves in a two component magnetized plasma consisting of fluid cold electrons and hot superthermal ions are considered. The linear dispersion relation for electron acoustic waves is derived. In the nonlinear regime, the energy integral is obtained by a Sagdeev pseudopotential analysis, which predicts negative solitary potential structures. The effects of superthermality, obliquity, temperature, and Mach number on solitary structures are studied in detail. The results show that the superthermal index {kappa} and electron to ion temperature ratio {sigma} alters the regime where solitary waves can exist. It is found that an increase in magnetic field value results in an enhancement of soliton electric field amplitude and a reduction in soliton width and pulse duration.

• OSTI ID: 22086024
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 8 Vol. 19; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
COMPUTERIZED SIMULATION
DISPERSION RELATIONS
ELECTRIC FIELDS
ELECTRON PLASMA WAVES
ELECTRON TEMPERATURE
ION TEMPERATURE
IONS
MACH NUMBER
MAGNETIC FIELDS
NONLINEAR PROBLEMS
PULSES
SOLITONS
SOUND WAVES