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. Author manuscript; available in PMC: 2021 Oct 1.
Published in final edited form as: J Aerosol Sci. 2020 May 21;148:105587. doi: 10.1016/j.jaerosci.2020.105587

Fig. 4.

Fig. 4.

Contour plots of the (a) electric field (V/m), (b) ion concentration (#/cc), the contours are clipped to 1e+9#/cc, maximum value is 5.93+9 #/cc (c) velocity (m/s) and for 3 kV corona voltage between the needle and the ground tube.