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摘要

PROBLEM TO BE SOLVED: To provide a method and apparatus for generating ions for electrostatic neutralization with high efficiency by optimizing a series of steps of generating ions, electrically balancing them, and moving generated ions.;SOLUTION: The method and apparatus for generating positive ions and negative ions include electrodes 2, 3 that are separated by a gap G and to the electrodes, an alternating ionizing voltage 10 is supplied at a frequency indicative of a residual time during transition in which generated ions are moved into the gap between the electrodes and ions are accumulated in substantially the center region of the gap. An electrostatic field, or an air flow through the gap, or another gas flow conveys the generated ions from within the gap. Self-balancing of the generated positive ions and negative ions is accomplished using capacitive coupling 12 of the ionizing voltage to at least one of the electrodes arranged around the gap.;COPYRIGHT: (C)2011,JPO&INPIT