Ion Acoustic Solitary Waves and Double-Layer Propagation in an Unmagnetized Plasma With Degenerate Electrons

Autor:	Mona Abdel Aziz, W. F. El-Taibany, Abdullah Ghallab
Rok vydání:	2021
Předmět:	Physics Nuclear and High Energy Physics Physics::Plasma Physics Degenerate energy levels Phase (waves) White dwarf Astrophysical plasma Plasma Electron Atomic physics Condensed Matter Physics Gardner's relation Ion
Zdroj:	IEEE Transactions on Plasma Science. 49:2629-2636
ISSN:	1939-9375 0093-3813
DOI:	10.1109/tps.2021.3101197
Popis:	The nonlinear propagation of ion-acoustic (IA) solitons and double layers (DLs) in a nonrelativistic degenerate plasma is investigated. This plasma model consists of negative ions, positive ions, and degenerate electrons. The Gardner equation is derived using the reductive perturbation technique. Both the Gardner solitons and DLs exist in our model. The characteristics of these waves are analyzed. It is found that the properties of these structures depend on the densities, the temperature, and the mass ratio of the ions and also on the chemical potential of the degenerate electrons. Additionally, it is found that the system sustains two different IA modes with different phase velocities known as slow and fast IA modes. These investigations can be useful in space plasma situations that contain opposite polarity ions such as compact astrophysical objects like white dwarfs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2fac72c56ba7c6c42491b1e95f7a6825 https://doi.org/10.1109/tps.2021.3101197 Zobrazit plný text záznamu