High-Frequency Electrostatic SW at the Boundary between Quantum Plasma and Metal

Bahaa F. Mohamed, Rehab Albrulosy

Department of Physics, Faculty of Science, Banha University, Banha, Egypt.
Department of Plasma Physics, N.R.C., Atomic Energy Authority, Cairo, Egypt.

DOI: 10.4236/jmp.2013.43044                

Abstract

It is shown that high-frequency electrostatic surface waves (SW) could be propagated at right angles to an external magnetic field on the boundary between metal and gaseous plasma due to a finite pressure electron gas in quantum plasma by using the quantum hydrodynamic QHD equations. The dispersion relation for those surface waves in uniform electron plasma is derived under strong external magnetic field. We have shown that the electrostatic surface waves exist also in the frequency for the ranges where electromagnetic SW is impossible. The surface plasma modes are numerically evaluated for the specific case of gold metallic plasma at room temperature. It has been found that dispersion relation of surface modes depends significantly on these quantum effects (Bohm potential and statistical) and should be into account in the case of magnetized or unmagnetized plasma.

Keywords

Quantum Plasma; Surface Waves; Quantum Effects; Plasmons

Conflicts of Interest

The authors declare no conflicts of interest.

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