Surface waves on a quantum plasma half-space

Details Surface waves on a quantum plasma half-space Surface waves on a quantum plasma half-space

2007-11-15

arxiv.org/abs/0711.2376v1

submmitted to Physics of Plasmas on October 22, 2007

Physics

Plasma Physics

Scientific paper

10.1063/1.2825278

Surface modes are coupled electromagnetic/electrostatic excitations of free electrons near the vacuum-plasma interface and can be excited on a sufficiently dense plasma half-space. They propagate along the surface plane and decay in either sides of the boundary. In such dense plasma models, which are of interest in electronic signal transmission or in some astrophysical applications, the dynamics of the electrons is certainly affected by the quantum effects. Thus, the dispersion relation for the surface wave on a quantum electron plasma half-space is derived by employing the quantum hydrodynamical (QHD) and Maxwell-Poison equations. The QHD include quantum forces involving the Fermi electron temperature and the quantum Bohm potential. It is found that, at room temperature, the quantum effects are mainly relevant for the electrostatic surface plasma waves in a dense gold metallic plasma.

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