A mass spectrometer 10 comprises an ion source 12 which generates {HEAD ~ nebulized ions} which enter {TAIL ~ an ion cooler} 20 via an ion source block 16 
A mass spectrometer 10 comprises an ion source 12 which generates { HEAD ~ nebulized ions } which enter { TAIL ~ an ion cooler } 20 via an ion source block 16
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH