• Propagation and oblique collision of electron-acoustic solitons in two-electron-populated quantum plasmas

• # Fulltext

https://www.ias.ac.in/article/fulltext/pram/077/02/0369-0382

• # Keywords

Electron-acoustic solitary excitations; quantum degeneracy; quantum hydrodynamics; oblique collision; phase-shift

• # Abstract

Oblique interaction of small- but ﬁnite-amplitude KdV-type electron-acoustic solitary excitations is examined in an unmagnetized two-electron-populated degenerate quantum electron–ion plasma in the framework of quantum hydrodynamics model using the extended Poincaré–Lighthill–Kuo (PLK) perturbation method. Critical plasma parameter is found to distinguish the types of solitons and their interaction phase-shifts. It is shown that, depending on the critical quantum diffraction parameter $H_{cr}$, both compressive and rarefactive solitary excitations may exist in this plasma and their collision phase-shifts can be either positive or negative for the whole range of collision angles $0 &lt; θ &lt; π$.

• # Author Affiliations

1. Faculty of Science, Department of Physics, Azarbaijan University of Tarbiat Moallem, 51745-406, Tabriz, Iran

• # Pramana – Journal of Physics

Volume 94, 2020
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019