The establishment of EVISA is funded by the EU through
the Fifth Framework Programme (G7RT- CT- 2002- 05112).
Supporters of EVISA includes:
A metastable ion is a precursor ion that dissociates into a fragment ion and neutral species after leaving the ion source (that is, after acceleration) but before reaching the detector. The dissociation is most readily observed when it takes place in one of the field-free regions of a sector mass spectrometer.