期刊
PHYSICS OF PLASMAS
卷 17, 期 3, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3322895
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资金
- UK EPSRC [EP/D06337X/1]
- National Research Foundation of South Africa (NRF)
- EPSRC [EP/D06337X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/D06337X/1] Funding Source: researchfish
The nonlinear propagation of ion-acoustic waves is considered in a magnetized plasma, composed of kappa distributed electrons and an inertial ion fluid. The fluid-dynamical system of equations governing the dynamics of ion-acoustic waves is reduced to a pseudoenergy-balance equation. The properties of arbitrary amplitude, obliquely propagating ion-acoustic solitary waves are thus investigated via a mechanical-motion analog (Sagdeev potential) approach. The presence of excess superthermal electrons is shown to influence the nature of magnetized ion-acoustic solitons. The influence on the soliton characteristics of relevant physical parameters such as obliqueness (the angle between soliton propagation direction and magnetic field), the electron deviation from a Maxwellian (superthermality) and the soliton speed is investigated. (C) 2010 American Institute of Physics. [doi:10.1063/1.3322895]
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