caa a22 4500 445865377 CHVBK 20180317145456.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1140/epjd/e2011-20374-x doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20374-x Arbitrary magnetosonic solitary waves in spin 1/2 degenerate quantum plasma [Elektronische Daten] [A. Mushtaq, S. Vladimirov] Linear and nonlinear compressional magnetosonic waves are studied in magnetized degenerate spin-1/2 Fermi plasmas. Starting from the basic equations of a quantum magnetoplasma we develop the system of quantum magnetohydrodynamic (QMHD) equations. Spin effects are incorporated via spin force and macroscopic spin magnetization current. Sagdeev potential approach is employed to derive the nonlinear energy integral equation which admits the rarefactive solitary structure in the subAlfvenic region. The quantum diffraction due to Bohm potential does not affect the amplitude of soliton but has a direct effect on its width. The width of soliton is broadened with the increase in the quantization of the system due to quantum diffraction. However, the nonlinear wave amplitude is reduced with the increase in the value of magnetization energy due to electron spin-1/2 effects. The degeneracy effect due to quantum plasma beta enhances the amplitude of magnetosonic soliton. The importance of the work relevant to compact astrophysical bodies is pointed out. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Mushtaq A. TPPD, PINSTECH, P.O. Nilore, 44000, Islamabad, Pakistan aut Vladimirov S. School of Physics, University of Sydney, 2006, NSW, Australia aut The European Physical Journal D Springer-Verlag 64/2-3(2011-10-01), 419-426 1434-6060 64:2-3<419 2011 64 10053 https://doi.org/10.1140/epjd/e2011-20374-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20374-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mushtaq A. TPPD, PINSTECH, P.O. Nilore, 44000, Islamabad, Pakistan aut NATIONALLICENCE 700 1- Vladimirov S. School of Physics, University of Sydney, 2006, NSW, Australia aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 64/2-3(2011-10-01), 419-426 1434-6060 64:2-3<419 2011 64 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer