Ion-acoustic solitons in multispecies spatially inhomogeneous plasmas |
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| Authors: | Tarsem Singh Gill Harvinder Kaur Nareshpal Singh Saini |
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| Institution: | (1) Department of Physics, Guru Nanak Dev University, 143 005 Amritsar, India;(2) Department of Physics, Khalsa College, 143 002 Amritsar, India |
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| Abstract: | Ion-acoustic solitons are investigated in the spatially inhomogeneous plasma having electrons-positrons and ions. The soliton
characteristics are described by Korteweg-de Vries equation which has an additional term. The density and temperature of different
species play an important role for the amplitude and width of the solitons. Numerical calculations show only the possibility
of compressive solitons. Further, analytical results predict that the peak amplitude of soliton decreases with the decrease
of density gradient. Soliton characteristics like peak amplitude and width are substantially different from those based on
KdV theory for homogeneous plasmas |
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| Keywords: | Ion-acoustic solitons compressive multispecies electron-positron |
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