Fully nonlinear ion-sound waves in a dense Fermi magnetoplasma

S. Ali, W.M. Moslem, P.K. Shukla, Ioannis Kourakis

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)606-610
Number of pages5
JournalPhysics Letters A
Volume366 (6)
Issue number6
DOIs
Publication statusPublished - 09 Jul 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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