Fluorescence emission of iron or {HEAD ~ cerium} in {TAIL ~ glass} is excited and imaged onto segmented detectors 
Fluorescence emission of iron or { HEAD ~ cerium } in { TAIL ~ glass } is excited and imaged onto segmented detectors
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH