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