Whether for the segmented boundary embodiment of FIG 12 or the curved wall embodiment of FIGS 7 11, the chamber 150 includes a first chamber wall that is disposed substantially in {HEAD ~ line} with {TAIL ~ a channel wall}  
with
Whether for the segmented boundary embodiment of FIG 12 or the curved wall embodiment of FIGS 7 11 , the chamber 150 includes a first chamber wall that is disposed substantially in { HEAD ~ line } with { TAIL ~ a channel wall }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH