Abstract
By employing the reductive perturbation technique, nonlinear cylindrical and spherical Korteweg–de Vries Burgers (KdVB) equation is derived for ion acoustic shock waves in an unmagnetized electronegative plasma. The latter is composed of warm positive and warm negative ions as well as q-distributed nonextensive electrons. Numerically, the modified KdVB equation is solved to examine the impact of nonthermal electrons on the profiles of nonplanar fast ion acoustic shocks. With the help of experimental parameters, it is found that the variations of different quantities, like q (nonextensive parameter), α (the negative-to-positive ion mass ratio), μ (the electron-to-positive ion density ratio) and θ i (the positive ion-to-electron temperature ratio), η i0,n0 (the positive/negative ion viscosities) significantly modify the propagation characteristics of nonplanar shocks in electronegative plasmas. The relevance to a laboratory experiment is highlighted, where positive and negative ions are present.
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Acknowledgements
S.A.S. acknowledges the enabling role of the Higher Education Commission Islamabad, Pakistan, and appreciates its financial support for Ph.D. Studies under Indigenous 5000 Fellowships.
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Ali Shan, S., Ali, S. & Aman-ur-Rehman Nonplanar shocks in a warm electronegative plasma with electron nonextensivity effects. Astrophys Space Sci 353, 151–162 (2014). https://doi.org/10.1007/s10509-014-2019-3
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DOI: https://doi.org/10.1007/s10509-014-2019-3