Wave propagation in strongly coupled classical plasmas in an external magnetic field

1988 ◽  
Vol 27 (5) ◽  
pp. 649-658 ◽  
Author(s):  
R. O. Genga
Keyword(s):  
Magnetic Field ◽  
Wave Propagation ◽  
External Magnetic Field ◽  
Strongly Coupled

Vortices in a strongly coupled collisional quantum plasma embedded in an external magnetic field

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chitrita Dasgupta ◽  
Sarit Maitra
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Vortex Motion ◽  
Radial Distance ◽  
Radial Electric Field ◽  
Momentum Equation ◽  
Electron Exchange ◽  
Quantum Plasma ◽  
Strongly Coupled ◽  
Exchange Correlation

Abstract Vortex motion of a cylindrical quantum plasma containing degenerate inertialess electrons and strongly correlated, non-degenerate inertial ions is studied. The electron exchange–correlation and ion–neutral collisional effects are taken into consideration, along with vertical external magnetic field and radial electric field. Considering generalized viscoelastic momentum equation for strongly coupled ions in quasi-crystalline state, variation of different rotational characteristics along radial distance are discussed numerically. Existence of shear rotation is observed near both the core and the periphery of the vortex, which is found to be modified by ion–ion correlation, quantum effects of the degenerate electrons, the ion–neutral collision, as well as by the magnetic field. It is noticed that electron exchange–correlation potential and quantum diffraction play major roles in modifying the rotational characteristics. Vorticity and the rate of increment of enstrophy with respect to radial distance, diminish to zero towards the periphery of the vortex. Also, it is noted that the ion–neutral collision may be responsible for reducing the increment of enstrophy.

scholarly journals Dynamic control of spin-wave propagation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jan-Niklas Toedt ◽  
Wolfgang Hansen
Keyword(s):  
Magnetic Field ◽  
Wave Propagation ◽  
External Magnetic Field ◽  
Wave Packet ◽  
Spin Wave ◽  
Wave Packets ◽  
Dynamic Control ◽  
Temporal Inhomogeneity

AbstractIn this work we present a method to dynamically control the propagation of spin-wave packets. By altering an external magnetic field the refraction of the spin wave at a temporal inhomogeneity is enabled. Since the inhomogeneity is spatially invariant, the spin-wave impulse remains conserved while the frequency is shifted. We demonstrate the stopping and rebound of a traveling Backward-Volume type spin-wave packet.

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