Localized whistlers in magnetized spin quantum plasmas

Abstract

The nonlinear propagation of electromagnetic (EM) electron-cyclotron waves (whistlers) along an external magnetic field, and their modulation by electrostatic small but finite amplitude ion-acoustic density perturbations are investigated in a uniform quantum plasma with intrinsic spin of electrons. The effects of the quantum force associated with the Bohm potential and the combined effects of the classical as well as the spin-induced ponderomotive forces (CPF and SPF respectively) are taken into consideration. The latter modify the local plasma density in a self-consistent manner. The coupled modes of wave propagation is shown to be governed by a modified set of nonlinear Schrödinger-Boussinesq-like equations which admit exact solutions in form of stationary localized envelopes. Numerical simulation reveals the existence of large-scale density fluctuations that are self-consistently created by the localized whistlers in a strongly magnetized high density plasma. The conditions for the modulational instability (MI) and the value of its growth rate are obtained. Possible applications of our results, e.g., in strongly magnetized dense plasmas and in the next generation laser-solid density plasma interaction experiments are discussed.

9 pages, 4 figures; To appear in Physical Review E (2010)

References in corpus (12)

• Physics of Strongly Magnetized Neutron Stars
• Self-consistent fluid model for a quantum electron gas
• Dynamics of spin 1/2 quantum plasmas
• Spin magnetohydrodynamics
• Autoresonant control of the many-electron dynamics in nonparabolic quantum wells
• Effects of the $g$-factor in semi-classical kinetic plasma theory
• Scalar quantum kinetic theory for spin-1/2 particles: mean field theory
• Spin contribution to the ponderomotive force in a plasma
• Ferromagnetic behavior in magnetized plasmas
• Frontiers of the physics of dense plasmas and planetary interiors: experiments, theory, applications
• Circularly polarized modes in magnetized spin plasmas
• A New Type of Plasma Wakefield Accelerator Driven by Magnetowaves

Cited by in corpus (8)

• Separated spin-up and spin-down quantum hydrodynamics of degenerated electrons: spin-electron acoustic wave appearance
• Oblique propagation of longitudinal waves in magnetized spin-1/2 plasmas: Independent evolution of spin-up and spin-down electrons
• The ponderomotive force due to the intrinsic spin in extended fluid and kinetic models
• Generation of wakefields by whistlers in spin quantum magnetoplasmas
• Waves of spin-current in magnetized dielectrics
• Magnetohydrodynamic shocks in a dissipative quantum plasma with exchange-correlation effects
• Generation of wakefields and electromagnetic solitons in relativistic degenerate plasmas
• Bound states near a moving charge in a quantum plasma