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plasma oscillation

plasma oscillation

Plasma oscillations generally mean various oscillations of electrons and ions in a plasma state. The plasma oscillations detected and analyzed by EELS are collective oscillations of free electrons (volume plasmon) and oscillation modes of electrons on a solid surface (surface plasmon). The oscillation frequency of the volume plasmon is proportional to the square root of the electron density. The oscillation frequency of the surface plasmon is (1/√2) times that of the volume plasmon when the solid surface is exposed to vacuum.

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