{HEAD ~ The mixture} comprises a precursor of a desired material within a supercritical fluid, and is initially provided in {TAIL ~ the chamber} under first conditions at which the precursor is stable 
{ HEAD ~ The mixture } comprises a precursor of a desired material within a supercritical fluid , and is initially provided in { TAIL ~ the chamber } under first conditions at which the precursor is stable
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH