Further the chamber 150 also includes a second wall portion that is disposed along a direction that is at {HEAD ~ an angle} between ten degrees and {TAIL ~ eighty degrees} with respect to channel wall 145 
between
Further the chamber 150 also includes a second wall portion that is disposed along a direction that is at { HEAD ~ an angle } between ten degrees and { TAIL ~ eighty degrees } with respect to channel wall 145
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH