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Head-on collision of ion-acoustic solitary waves in multicomponent plasmas with positrons
Umeå University, Faculty of Science and Technology, Department of Physics. Ruhr Univ Bochum, Inst Theoret Phys 4, Fak Phys & Astron, D-44780 Bochum, Germany; Ruhr Univ Bochum, Nonlinear Phys Ctr, D-44780 Bochum, Germany; Ruhr Univ Bochum, Ctr Plasma Sci & Astrophys, D-44780 Bochum, Germany; Rutherford Appleton Lab, Ctr Fundamental Phys, CCLRC, Didcot 0X11 OQX, Oxon, England; Univ Strathclyde, SUPA Dept Phys, Glasgow G 40NG, Lanark, Scotland; Univ Kwazulu Natal, Sch Phys, Fac Sci & Agr, ZA-4000 Durban, South Africa.
2010 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 17, no 8, 082311Article in journal (Refereed) Published
Abstract [en]

The head-on collision between two ion-acoustic solitary waves in an unmagnetized multicomponent plasma consisting of hot ions, hot positrons, and two-electron temperature distributions is investigated using the extended Poincare-Lighthill-Kuo method. The Kortwege-de Vries equations and the analytical phase shifts after the head-on collision of two solitary waves in this multicomponent plasma are obtained. The effects of two different types of isothermal electrons, the ratio of the hot ion temperature to the effective temperature, the ratio of the effective temperature to the positron temperature, the ratio of the number density of positrons to that of electrons species, and the physical processes (either isothermal or adiabatic) on the phase shifts are studied. It is found that these parameters can significantly influence the phase shifts of the solitons. The relevance of this investigation to space and laboratory plasmas is pointed out. 

Place, publisher, year, edition, pages
2010. Vol. 17, no 8, 082311
National Category
Physical Sciences
URN: urn:nbn:se:umu:diva-109613DOI: 10.1063/1.3480096ISI: 000281906300023OAI: diva2:858632
Available from: 2015-10-02 Created: 2015-10-02 Last updated: 2015-10-02Bibliographically approved

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Shukla, P. K.
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