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In this paper, a method is developed to compute the ion-flow from an AC coronating wire above the ground plane, without resort to simplifying assumptions. In this method, emission of ions takes place from the wire into the space around when the surface gradient of the wire exceeds the onset value. The space charges are simulated by discrete line charges and the C-S technique is used to compute the charge emission from the coronating wire during corona periods over both the positive and negative half cycles. The simulation line charges are displaced away-from and back-to the wire by the prevailing AC field with a subsequent recombination between the outogoing and returning line charges of opposite polarities. The point from of Gauss'law is used for computing the prevailing field being equal to the contributions of all discrete line charges in space and in wire.Among the parameters computed in the present work are 1) the corona current components and their time variations during the positive and negatiwe half-cycles, 2) the corona chargevoltage characteristics for different applied voltages, and 3 ) the corona onset and the ionization onset voltages as well as the corona ending voltage over the succeeding positive and negative half cycles. In comparison with the experiment, the computed corona power-loss agreed reasonably with those measured experimentally.

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