Ions, neutral particles, and {HEAD ~ macro particles} generated by {TAIL ~ the cathodic arc flow} into the magnetic duct where substantially all the neutral and macro particles are removed 
generated by
Ions , neutral particles , and { HEAD ~ macro particles } generated by { TAIL ~ the cathodic arc flow } into the magnetic duct where substantially all the neutral and macro particles are removed
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH