Nonlinear ion-acoustic cnoidal waves in a dense relativistic degenerate magnetoplasma

2015 ◽  
Vol 91 (3) ◽  
Author(s):  
E. F. El-Shamy
Keyword(s):  
Cnoidal Waves ◽  
Ion Acoustic

Oblique propagation of nonlinear ion-acoustic cnoidal waves in magnetized electron–positron–ion plasmas with nonextensive electrons

2021 ◽  
Vol 23 (3) ◽  
pp. 035301
Author(s):  
Muhammad KHALID ◽  
Ghufran ULLAH ◽  
Mohsin KHAN ◽  
Sheraz AHMAD ◽  
Sardar NABI ◽  
...  
Keyword(s):  
Nonextensive Electrons ◽  
Cnoidal Waves ◽  
Oblique Propagation ◽  
Electron Positron ◽  
Ion Acoustic

Ion-Acoustic Cnoidal Waves with the Density Effect of Spin-up and Spin-down Degenerate Electrons in a Dense Astrophysical Plasma

2020 ◽  
Vol 75 (2) ◽  
pp. 103-111 ◽  
Author(s):  
Nimardeep Kaur ◽  
Rupinder Kaur ◽  
N. S. Saini
Keyword(s):  
Solitary Waves ◽  
Reductive Perturbation Method ◽  
Quantum Plasma ◽  
Plasma Parameters ◽  
Separate Species ◽  
Cnoidal Waves ◽  
Ion Acoustic ◽  
Characteristic Features ◽  
Pseudopotential Approach ◽  
Limiting Case

AbstractAn investigation of nonlinear ion acoustic (IA) cnoidal waves in a magnetised quantum plasma is presented by using spin evolution quantum hydrodynamics model, in which inertial classical ions and degenerate inertialess electrons with both spin-up and spin-down states taken as separate species are considered. The Korteweg–de Vries equation is derived using the reductive perturbation method. Further, using the Sagdeev pseudopotential approach, the solution for IA cnoidal waves is derived with suitable boundary conditions. There is the formation of only positive potential cnoidal, and in the limiting case, positive solitary waves are observed. The effects of density polarisation and other plasma parameters on the characteristic features of cnoidal and solitary waves have been analysed numerically. It is seen that the spin density polarisation significantly affects the characteristics of cnoidal structures as we move from strongly spin-polarised (μ = 1) to a zero spin-polarisation case (μ = 0). The results obtained in the present investigation may be useful in comprehending various nonlinear excitations in dense astrophysical regions, such as white dwarfs, neutron stars, and so on.

Oblique propagation of ion acoustic soliton-cnoidal waves in a magnetized electron-positron-ion plasma with superthermal electrons

2014 ◽  
Vol 21 (3) ◽  
pp. 032111 ◽  
Author(s):  
Jian-Yong Wang ◽  
Xue-Ping Cheng ◽  
Xiao-Yan Tang ◽  
Jian-Rong Yang ◽  
Bo Ren
Keyword(s):  
Superthermal Electrons ◽  
Cnoidal Waves ◽  
Oblique Propagation ◽  
Ion Plasma ◽  
Electron Positron ◽  
Ion Acoustic ◽  
Ion Acoustic Soliton
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