The nonlinear propagation of ion-sound waves in a collisionless dense electron-ion magnetoplasma is investigated. The inertialess electrons are assumed to follow a non-Boltzmann distribution due to the pressure for the Fermi plasma and the ions are described by the hydrodynamic (HD) equations. An energy balance-like equation involving a new Sagdeev-type pseudo-potential is derived in the presence of the quantum statistical effects. Numerical calculations reveal that the profiles of the Sagdeev-like potential and the ion-sound density excitations are significantly affected by the wave direction cosine and the Mach number. The present studies might be helpful to understand the excitation of nonlinear ion-sound waves in dense plasmas such as those in superdense white dwarfs and neutron stars as well as in intense laser-solid density plasma experiments.
ASJC Scopus subject areas
- Physics and Astronomy(all)
Ali, S., Moslem, W. M., Shukla, P. K., & Kourakis, I. (2007). Fully nonlinear ion-sound waves in a dense Fermi magnetoplasma. Physics Letters A, 366 (6)(6), 606-610. https://doi.org/10.1016/j.physleta.2007.05.073