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Electron acoustic super solitary waves in a magnetized plasma

Published online by Cambridge University Press:  27 July 2018

T. Kamalam ,
S. V. Steffy  and
S. S. Ghosh
T. Kamalam*
Affiliation:
Indian Institute of Geomagnetism, Navi Mumbai 410218, India
S. V. Steffy
Affiliation:
Indian Institute of Geomagnetism, Navi Mumbai 410218, India
S. S. Ghosh
Affiliation:
Indian Institute of Geomagnetism, Navi Mumbai 410218, India
*
†Email address for correspondence: [email protected]
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Abstract

An electron acoustic super solitary wave has been derived using the Sagdeev pseudopotential technique for a four component magnetized plasma consisting of the beam and bulk fluid electrons and two ions with Maxwell Boltzmann distributions. This is the first theoretical report of a super solitary wave in a magnetized plasma which has no direct association with the singularity of the pseudopotential. It shows a narrow and spiky subwell near the low potential which causes the lateral inversion of the wiggle for the bipolar electric field vis-á-vis the unmagnetized plasma. An analytical formalism was developed to identify these novel kinds of super solitary waves and their transition processes have been characterized. It was observed that the super solitary wave is directly influenced by the singularity of the pseudopotential lying in the vicinity of the solution. The first ever prediction of the electron acoustic super solitary wave raises the possibility of its application to the interpretation of the satellite observations of the electrostatic field data.

Keywords

plasma nonlinear phenomenaplasma wavesspace plasma physics
Type
Research Article
Information
Journal of Plasma Physics , Volume 84 , Issue 4 , August 2018 , 905840406
Copyright
© Cambridge University Press 2018 

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