{HEAD ~ One known way} to improve the efficiency of glow discharge sputtering is to use magnetic fields to confine electrons to the glow region in the vicinity of {TAIL ~ the cathode/target surface} 
{ HEAD ~ One known way } to improve the efficiency of glow discharge sputtering is to use magnetic fields to confine electrons to the glow region in the vicinity of { TAIL ~ the cathode / target surface }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL