We report on intricate dynamics observed in atmospheric-pressure rf electronegative dischargesudwhere electrons and anions are separated due to their different mobilities. This results in theudformation of positively charged regions between an electronegative plasma core and an oscillatingudelectron ensemble. It is found that for a given input power, the electron, ion (both positive andudnegative) and neutral fluxes increase as the gap size is reduced, resulting in a more efficientuddelivery of chemical species to a treated target.
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