The plasma emission contains {HEAD ~ both ions} and electrons from the cathodic arc for which {TAIL ~ the ions} contain the mass to be deposited 
The plasma emission contains { HEAD ~ both ions } and electrons from the cathodic arc for which { TAIL ~ the ions } contain the mass to be deposited
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH