Modulation of multi-dimensional waves in anisotropic magnetized plasma
Theoretical Plasma Physics Group, Islamia College Peshawar, 25120, Peshawar, Pakistan
2 Department of Physics, Government Post Graduate College Mardan, 23200, Mardan, Pakistan
3 Department of Applied Physical and Material Sciences, University of Swat, 19200, Swat, Pakistan
Accepted: 10 October 2021
Published online: 21 October 2021
One of the generic nonlinear mechanism which was so far unexplored is the oblique amplitude modulation of ion acoustic waves (IAWs) in anisotropic magnetoplasma with positive ions having anisotropic thermal pressure and Maxwellian electrons. The three-dimensional (3D) nonlinear Schrödinger equation (NLSE) for the wave potential is derived via a multi-scales perturbation technique. The criteria under which the 3D modulational instability (MI) develops are discussed. The upshots of relevant plasma parameters, specifically, the ion pressure anisotropy on the dynamics of 3D MI of IAWs as well as the instability growth rate are investigated in detail. The bearing to peculiar plasma environments is also highlighted.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021