Friedel oscillations in quantum degenerate collisional plasma. Screening of point charge

Details Friedel oscillations in quantum degenerate collisional plasma. Screening of point charge Friedel oscillations in quantum degenerate collisional plasma. Screening of point charge

2010-08-30

arxiv.org/abs/1008.5004v1

Physics

Mathematical Physics

16 pages, 3 figures

Scientific paper

Research of influence of collisions on Friedel oscillations in quantum degenerate collisional plasma (T=0) is carried out for the first time. It is shown that presence of collisions in plasma leads to exponential decreasing of amplitude and phase shift of the Friedel oscillations. In linear approximation the phase shift is equal to the half of quantity inverse to product of Fermi's wave number by free length path of electrons. The correct expression for longitudinal dielectric permeability of the quantum collisional plasma found by the authors (see arxiv:1001.3937 [math-ph] 22 Jan 2010) is used.

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