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Analysis of the behavior of ions produced by pulsed corona discharge

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3 Author(s)
Higashiyama, Y. ; Dept. of Electr. & Inf. Eng., Yamagata Univ., Yonezawa, Japan ; Yamanaka, K. ; Asano, K.

The motion of an ion cloud which is produced by a corona discharge with the high-voltage pulse of a short duration and is introduced into parallel plate electrodes was calculated numerically. The ion cloud initially placed at the tip of a needle electrode was simulated by a number of ring charges and the trajectories of individual ring charges were calculated by using electric field strength obtained with a charge simulation method. Not only movement of the ion cloud but also the waveform of the induced current flowing through a ring electrode located at the center of the parallel plate electrode were simulated and analyzed. The ion cloud with an initial diameter of 0.5 mm expands to 5 mm by electrostatic repulsion within 10 μs after the beginning of drift. During drifting toward the counter electrode, the ion cloud extends wider to a diameter of around 20-25 mm. The size and velocity of ion clouds agree with those estimated by experiments and the waveform of induced current obtained by experiments was reproduced by this simulation

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Industry Applications, IEEE Transactions on  (Volume:33 ,  Issue: 2 )