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Metastable ion fragmentation processes in n ‐alkanes
Author(s) -
Goldberg P.,
Hopkinson J. A.,
Mathias A.,
Williams A. E.
Publication year - 1970
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.1210030804
Subject(s) - metastability , fragmentation (computing) , ion , mass spectrometry , heptane , chemistry , analytical chemistry (journal) , spectrometer , propane , atomic physics , mass spectrum , physics , organic chemistry , chromatography , optics , computer science , operating system
The n ‐alkanes, propane to heptane, have been studied in a modified MS‐9 mass spectrometer under conditions that enabled the daughter ions, resulting from metastable fragmentation processes occurring in the first field free region, to be observed with high sensitivity. The precursor ions in these fragmentations have been identified unambiguously and a general fragmentation scheme for the n ‐alkanes is proposed. The mass spectrometer incorporated a variable width monitor slit and narrow settings of this slit improved the energy resolution so that fine structure could be observed in some of the ‘metastable peaks’. The implications of this fine structure are discussed.