After ionization, all the ions can be easily directed to the collection plates by {HEAD ~ an electric field} formed from {TAIL ~ the parallel plates} 
formed from
After ionization , all the ions can be easily directed to the collection plates by { HEAD ~ an electric field } formed from { TAIL ~ the parallel plates }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL