Plasma Oscillation A dynamic aspect of the plasma's tendency toward neutralization shows as plasma oscillation If some region is (slightly) charged positively,  Incurred electric field attract (accelerate) electrons toward the region (for cancelling the charge inhomogeneity)  However, electron's motion overshoots  Electrons are pulled back (oscillations) Note: the electrons move much faster than the ions because of their masses We consider such a high-frequency variation of electrons' position in a static ion system
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