Includes electrodes spaced by a gap, the electrodes, can be moved into the gap between the electrodes and ions are generated, a method and apparatus for generating positive and negative ions is substantially the gap a frequency at which the residence time of the transition in which to accumulate ions into the central region, the ionization AC voltage is supplied. Gas flow or other air flow flowing through the gap or electrostatic field, and carries out of the gap ions produced. Self-equilibrium of the cation and anion that is generated is achieved by using a capacitive coupling of the ionization voltage of at least 1 Tsue of electrodes arranged around the gap.
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