= Plasma afterglow
{wiki=Plasma_afterglow}
Plasma afterglow refers to the phenomenon observed in low-temperature plasma discharges, such as those found in gas discharge lamps and plasma processing systems, where the plasma emits light and energy for a brief period after the power source has been turned off or reduced. This afterglow is primarily due to the relaxation processes of excited atoms and molecules within the plasma. When the plasma is active, gas particles become ionized and excited due to energy input from an electric field or other sources.
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