In one embodiment, {HEAD ~ the electrode} includes {TAIL ~ a corona wire} disposed proximate to the tow to provide a generally cylindrical charging region 
In one embodiment , { HEAD ~ the electrode } includes { TAIL ~ a corona wire } disposed proximate to the tow to provide a generally cylindrical charging region
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH