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