Planar and nonplanar ion-acoustic envelope solitary waves in a very dense electron-positron-ion plasma
2009 (English)In: European Physical Journal D: Atomic, Molecular and Optical Physics, ISSN 1434-6060, E-ISSN 1434-6079, Vol. 51, no 2, 233-240 p.Article in journal (Refereed) PublishedText
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 Schrodinger 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.
Place, publisher, year, edition, pages
Springer, 2009. Vol. 51, no 2, 233-240 p.
perturbation method, quantum plasmas, pair production, dusty plasmas, solitons, instability, generation, modulation, vortices, holes
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:umu:diva-116027DOI: 10.1140/epjd/e2008-00286-8ISI: 000263417700009OAI: oai:DiVA.org:umu-116027DiVA: diva2:904800