Evolution of ion-acoustic solitary waves in magnetized plasma contaminated with varying dust charged grains |
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| Affiliation: | 1. Mathematical Sciences Division, Institute of Advanced Study in Science & Technology, Guwahati 781022, India;2. Department of Physics, G.C. College, Silchar, Assam, India;3. Physics & Applied Mathematics Unit (PAMU), Indian Statistical Institute, Kolkata 700108, India;1. Autonomous University of Morelos (UAEM), Av. Universidad 1001, Col. Chamilpa, Cuernavaca 62209, Morelos, Mexico;2. UNAM, Center of Geoscience, Juriquilla 1-742, 76230 Que., Mexico;1. Department of Physics, Islamic Azad University of Bojnourd, Bojnourd, Iran;2. Department of Physics, Ferdowsi University of Mashhad, 91775-1436 Mashhad, Iran Center for Theoretical Physics, Ferdowsi University of Mashhad, Mashhad, Iran;1. Plasma Physics Division, Institute of Advanced Study in Science and Technology, Khanapara, Guwahati-781022, Assam, India;2. Department of Mathematics, R. G. Baruah College, Guwahati-781025, Assam, India |
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| Abstract: | Propagation of plasma-acoustic wave has been studied in magnetized plasma contaminated with dust charged grains. It has shown that, because of the configuration of magnetized plasma contaminated with dust charge fluctuation, pseudopotential method fails to derive nonlinear wave equation. We thus exercise an alternate approach to yield wave equation in the form of Sagdeev-like potential equation which enables the success to study the nonlinear waves. Again a modified mathematical formalism known as tanh-method has the merit to evaluate the soliton features in relation to its expectation in space. The method has its success in finding the solitary waves along with other exciting formation of shock-like wave, soliton radiation in soliton propagation. The results have more realistic interpretation in showing explicitly the interaction of magnetic field and impurity caused by dust charge variation. |
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