Longitudinal dielectric permettivity of quantum Maxwell collisional plasmas

Details Longitudinal dielectric permettivity of quantum Maxwell collisional plasmas Longitudinal dielectric permettivity of quantum Maxwell collisional plasmas

2010-03-12

arxiv.org/abs/1003.2531v1

Physics

Mathematical Physics

25 pages, 14 figures

Scientific paper

The kinetic equation of Wigner -- Vlasov -- Boltzmann with collision integral in relaxation BGK (Bhatnagar, Gross and Krook) form in coordinate space for quantum non--degenerate (Maxwellian) collisional plasma is used. Exact expression (within the limits of considered model) is found. The analysis of longitudinal dielectric permeability is done. It is shown that in the limit when Planck's constant tends to zero of expression for dielectric permettivity transforms into the classical case of dielectric permettivity. At small values of wave number it has been received the solution of the dispersion equation. Damping of plasma oscillations has been analized. The analytical comparison with the dielectric Mermin' function received with the use of the kinetic equation in momentum space is done. Graphic comparison of the real and imaginary parts of dielectric permettivity of quantum and classical plasma is done also.

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