The precursor and supercritical fluid mixture is initially provided in the chamber under the conditions at which {HEAD ~ the precursor} is {TAIL ~ relatively non reactive} 
is
The precursor and supercritical fluid mixture is initially provided in the chamber under the conditions at which { HEAD ~ the precursor } is { TAIL ~ relatively non reactive }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL