☆ 4.4 Article

Dust-ion-acoustic solitons in plasmas with non-Maxwellian electron distribution function

PHYSICS OF PLASMAS (2008)

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PHYSICS OF PLASMAS

卷 15, 期 10, 页码 -

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AIP Publishing

DOI: 10.1063/1.2999530

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Physics, Fluids & Plasmas

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Stationary dust-ion-acoustic (DIA) solitons in plasma with non-Maxwellian electron distribution function (DF) are studied. This is an important issue in low-pressure electrical gas discharges that the particle DF is generally non-Maxwellian. In the discharge plasmas, the electron temperature is usually much greater than the ion temperature. Thus, neglecting the ions velocity distribution, the electron DF is modeled by the generalized Lorentzian (kappa)-DF. The formalism is derived near the ion-plasma frequency. In this range of frequency, the ion dynamics is considerable and the dust-ion-acoustic solitons are the stationary solution of the governing equations. Electron trapping is included in the model as the result of nonlinear resonant interaction of the DIA soliton with electrons. The solitons attributes and influence of the non-Maxwellian electrons are studied. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2999530]

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