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Collisional activation spectra of field ionised molecules
Author(s) -
Levsen K.,
Beckey H. D.
Publication year - 1974
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.1210090605
Subject(s) - ion , fragmentation (computing) , spectral line , kinetic energy , chemistry , atomic physics , molecule , isomerization , electron ionization , helium , electron , physics , ionization , biochemistry , organic chemistry , quantum mechanics , astronomy , computer science , catalysis , operating system
The collision of field ionised molecular ions of high kinetic energy (8 keV) with neutral target atoms (helium) gives rise to a large variety of fragments. In general the types of fragments, as well as their abundance ratios, closely resemble those formed under 70 eV electron‐impact. The differences observed between the collisional activation spectra of several field ionised[C 7 H 8 ]+. ions, as well as the differences observed between several [C 8 H 8 ]+. ions can be rationalised assuming different degrees of isomerisation. The usefulness of collisional fragmentation spectra for structure determination of organic compounds has been demonstrated for a variety of compounds and some mixtures.