Ions within {TAIL ~ a window} of m/z of interest are extracted via {HEAD ~ a quadrupole mass filter} 24 and passed to a linear trap 30 
Ions within { TAIL ~ a window } of m / z of interest are extracted via { HEAD ~ a quadrupole mass filter } 24 and passed to a linear trap 30
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH