Header menu link for other important links
Nonlinear coherent structures of electron acoustic waves in unmagnetized plasmas
M. Ghosh, S. Pramanik,
Published in Elsevier B.V.
Volume: 396
The propagation dynamics of nonlinear electron acoustic waves (EAW) are explored analytically and numerically in collisionless unmagnetized plasmas. The dynamics of the nonlinear wave is shown to be governed by a Boussinesq equation. In the supersonic range, the wave becomes unstable in the short wave limit. In the nonlinear stage, this unstable mode reaches a maximum values and after that it damps. Different limiting cases of the general solutions are discussed. Analytical and computational results predict that the nonlinear EAW possesses breather structures apart from the usual solitary wave solutions. The results are discussed in the context of astrophysical plasmas. © 2021 Elsevier B.V.
About the journal
JournalData powered by TypesetPhysics Letters, Section A: General, Atomic and Solid State Physics
PublisherData powered by TypesetElsevier B.V.