Ion Temperature Gradient Mode–Driven Solitary and Shock Waves in Electron-Positron-Ion Magnetized Plasma

The characteristics of linear and nonlinear waves of ion temperature gradient mode in nonuniform electron-positron-ion magnetized plasma are investigated. A modified linear dispersion relation and its reduction in various limits are discussed. In nonlinear regime, ion temperature gradient mode–drive...

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Bibliographic Details
Published in:Brazilian journal of physics 2020-08, Vol.50 (4), p.430-437
Main Authors: Khan, Aziz, Zakir, U., Haque, Q.
Format: Article
Language:English
Subjects:
Electrons
General and Applied Physics
Ion temperature
Physics
Physics and Astronomy
Plasmas (physics)
Positrons
Shock waves
Temperature gradients
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Summary:The characteristics of linear and nonlinear waves of ion temperature gradient mode in nonuniform electron-positron-ion magnetized plasma are investigated. A modified linear dispersion relation and its reduction in various limits are discussed. In nonlinear regime, ion temperature gradient mode–driven solitary and shock wave structures are obtained and discussed. It is found that corresponding peak potential and width of these nonlinear structures strongly depend on the positron number density and temperature. Our study reveals that in electron-positron-ion plasma, the ion energy transportation in laboratory as well as in astrophysical plasmas can be affected because of positrons.
ISSN:0103-9733
1678-4448
DOI:10.1007/s13538-020-00752-z