Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Planar and nonplanar ion-acoustic envelope solitary waves in a very dense electron-positron-ion plasma

Sabry, R. and Moslem, W.M. and Shukla, P.K. (2009) Planar and nonplanar ion-acoustic envelope solitary waves in a very dense electron-positron-ion plasma. European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 51 (2). pp. 233-240. ISSN 1434-6060

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Ion-acoustic envelope solitary waves in a very dense plasma comprised of the electrons, positrons and ions are investigated. For this purpose, the quantum hydrodynamic model and the Poisson equation are used. A modified nonlinear Schr¨odinger equation is derived by employing the reductive perturbation method. The effects of the quantum correction and of the positron density on the propagation and stability of the envelope solitary waves are examined. The nonplanar (cylindrical/spherical) geometry gives rise to an instability period. The latter cannot exist for planar case and it affected by the quantum parameters, as well as the positron density. The present investigation is relevant to white dwarfs.