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Title: Magnetosonic waves interactions in a spin-1/2 degenerate quantum plasma

We investigate the magnetosonic waves and their interactions in a spin-1/2 degenerate quantum plasma. With the help of the extended Poincaré-Lighthill-Kuo perturbation method, we derive two Korteweg-de Vries-Burgers equations to describe the magnetosonic waves. The parameter region where exists magnetosonic waves and the phase diagram of the compressive and rarefactive solitary waves with different plasma parameters are shown. We further explore the effects of quantum diffraction, quantum statistics, and electron spin magnetization on the head-on collisions of magnetosonic solitary waves. We obtain the collision-induced phase shifts (trajectory changes) analytically. Both for the compressive and rarefactive solitary waves, it is found that the collisions only lead to negative phase shifts. Our present study should be useful to understand the collective phenomena related to the magnetosonic wave collisions in degenerate plasmas like those in the outer shell of massive white dwarfs as well as to the potential applications of plasmas.
Authors:
 [1] ;  [2]
  1. School of Science, Xi'an Jiaotong University, Xi'an 710049 (China)
  2. Department of Physics, Hexi University, Zhangye 734000 (China)
Publication Date:
OSTI Identifier:
22251975
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COLLISIONS; DIFFRACTION; EQUATIONS; INTERACTIONS; MAGNETIZATION; MAGNETOACOUSTIC WAVES; PERTURBATION THEORY; PHASE DIAGRAMS; PHASE SHIFT; POTENTIALS; QUANTUM PLASMA; SPIN; WHITE DWARF STARS