{HEAD ~ This invention} relates to a method and an apparatus of mass spectrometry, and in particular to a method and an apparatus for {TAIL ~ storage} and injection of ions into an electrostatic ion trap 
{ HEAD ~ This invention } relates to a method and an apparatus of mass spectrometry , and in particular to a method and an apparatus for { TAIL ~ storage } and injection of ions into an electrostatic ion trap
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH