TITLE

Quantum correction to Landau damping of electron plasma waves

AUTHOR(S)
Jun Zhu; Peiyong Ji; Nan Lu
PUB. DATE
March 2009
SOURCE
Physics of Plasmas;Mar2009, Vol. 16 Issue 3, p032105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
It is often assumed that quantum effects will be significant only in the low temperature and high density plasmas. In this paper this assumption is challenged by considering the quantum contribution to the Landau damping of electron plasma waves in normal temperature and high density plasmas. Starting from the linearized Vlasov equation which contains the Bohm quantum potential, the dispersion relation of electron plasma waves propagating in a quantum plasma is derived. A linear Landau damping rate and equations for this process are also deduced. Result indicates that quantum effects enlarge effective frequency of plasmas, which is attributed to an increase in charge or number density of plasma electrons. As a result, Debye length is reduced, and the Debye screening effect becomes obvious. So the quantum behavior appears screening effect here. Landau damping rate is reduced by quantum effects and the exchange of energy between particles and waves is retarded.
ACCESSION #
37258864

 

Related Articles

  • Wave-action conservation law for eigenmodes and continuum modes. Hirota, M.; Tokuda, S. // Physics of Plasmas;Aug2010, Vol. 17 Issue 8, p082109 

    Invariance of wave-action for eigenmodes and continuum modes around quasistationary equilibrium state is investigated in a general framework that allows for the ideal magnetohydrodynamic system and the Vlasov–Maxwell system. By utilizing the averaging method for the variational principle,...

  • Relativistic Landau damping of electron plasma waves in stimulated Raman scattering. Bers, A.; Shkarofsky, I. P.; Shoucri, M. // Physics of Plasmas;Feb2009, Vol. 16 Issue 2, pN.PAG 

    A new formulation of the kinetic (collisionless) electron plasma wave (EPW) damping rate in a relativistic thermal equilibrium plasma is presented, and evaluated for such waves in both forward and backward stimulated Raman scattering (SRS) in laser plasma interactions (LPI) in the temperature...

  • Eigenmode dispersion relations in radially inhomogeneous helicon plasmas. Suwon Cho // Physics of Plasmas;Jun2009, Vol. 16 Issue 6, p063504 

    The eigenmode dispersion relation is studied for a helicon plasma whose density varies in the radial direction. It is found that eigenmodes are strongly excited in a weakly collisional plasma when the dispersion relation obtained neglecting electron inertia is approximately satisfied and their...

  • Linear coupling of Alfven waves and acoustic-type modes in dense quantum magnetoplasmas. Khan, S. A.; Saleem, H. // Physics of Plasmas;May2009, Vol. 16 Issue 5, p052109 

    A coupled dispersion relation of low frequency shear Alfven waves and electrostatic waves in a dense quantum magnetoplasma is derived by using hydrodynamic model. The dispersive contribution of electron quantum effects is discussed for dynamic as well as static ions. The dominant role of...

  • Dissipative Processes during the Propagation of Nonlinear Dust Ion-Acoustic Perturbations. Popel, S. I.; Andreev, S. N.; Gisko, A. A.; Golub’, A. P.; Losseva, T. V. // Plasma Physics Reports;Apr2004, Vol. 30 Issue 4, p284 

    A comparative analysis of various dissipative processes occurring on ion-acoustic time scales during the excitation and propagation of nonlinear dust ion-acoustic perturbations in a complex (dusty) plasma is performed in terms of a purely kinetic approach and a hydrodynamic approach. It is found...

  • Observation of ion-acoustic shock waves undergoing Landau damping. Nakamura, Y.; Bailung, H.; Saitou, Y. // Physics of Plasmas;Aug2004, Vol. 11 Issue 8, p3925 

    Numerical results of a modified Korteweg–de Vries equation with an integral term which describes Landau damping have been compared with the experimental findings. In the linear regime, the wave damping rate is proportional to wave number, which conforms to a kinetic dispersion relation....

  • Nonlinear Landau damping in nonextensive statistics. Valentini, Francesco // Physics of Plasmas;Jul2005, Vol. 12 Issue 7, p072106 

    The evolution of electrostatic waves, in unmagnetized collisionless plasmas, is numerically investigated by using a semi-Lagrangian Vlasov-Poisson code, in the fully nonlinear regime and in the context of the nonextensive statistics proposed by Tsallis [C. Tsallis, J. Stat. Phys. 52, 479...

  • Effects of Landau quantization on the equations of state in intense laser plasma interactions with strong magnetic fields. Eliezer, Shalom; Norreys, Peter; x00E9; T.#Mendonça, Jos&; Lancaster, Kate // Physics of Plasmas;May2005, Vol. 12 Issue 5, p052115 

    Recently, magnetic fields of 0.7(±0.1) gigaGauss (GG) have been observed in the laboratory in laser plasma interactions. From scaling arguments, it appears that a few gigaGauss magnetic fields may be within reach of existing petawatt lasers. In this paper, the equations of state (EOS) are...

  • Experimental Investigation of Electron-Acoustic Waves in Electron Plasmas. Kabantsev, Andrey A.; Valentini, F.; Driscoll, C. Fred // AIP Conference Proceedings;2006, Vol. 862 Issue 1, p13 

    Electron-acoustic waves have strong linear Landau damping, but are observed as nonlinear BGK modes in experiments with pure electron plasmas. The waves have phase velocity v[lowercase_phi_synonym] ≈ 1.3v, in agreement with theory, and the longest wavelength BGK states exhibit only...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics