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A novel mass marker for metastable ion scans in a double focusing mass spectrometer
Author(s) -
Porter C. J.,
Brenton A. G.,
Bey J. H.,
Popplestone A.
Publication year - 1980
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210151104
Subject(s) - mass spectrometry , mass spectrum , ion , metastability , spectrometer , oscillograph , physics , chemistry , analytical chemistry (journal) , optics , chromatography , quantum mechanics
Characterization and assignment of the products of metastable decompositions which are transmitted by a double focusing mass spectrometer, is often complicated by the inability to measure precisely the parent/daughter ion mass values directly from the spectra which appear on chart paper. This is often because there are considerably fewer peaks in these types of spectra compared with a normal mass spectrum obtained from high energy reactions in the ion source. Electronic circuits are described which permit accurate parent/daughter ion mass values to be obtained when the products of metastable decompositions are transmitted through the ZAB‐2F double focusing mass spectrometer. Digital logic circuitry is also described which is used to mark mass values during a scan by driving either a solenoid pen drive unit for a chart recorder or a galvanometer on a multi‐range ultraviolet oscillograph recorder.