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 language | English |
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Pages (from-to) | 606-610 |
Number of pages | 5 |
Journal | Physics Letters A |
Volume | 366 (6) |
Issue number | 6 |
DOIs | |
Publication status | Published - 09 Jul 2007 |
ASJC Scopus subject areas
- General Physics and Astronomy