Premium
Deconvolution of kinetic‐energy release signals from singly, doubly, and triply charged metastable ions
Author(s) -
Koyanagi Gregory K.,
Wang Jianyao,
March Raymond E.
Publication year - 1990
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290041005
Subject(s) - kinetic energy , chemistry , metastability , ion , fragmentation (computing) , deconvolution , atomic physics , analytical chemistry (journal) , physics , optics , chromatography , organic chemistry , quantum mechanics , computer science , operating system
A new geometric model has been developed and applied to the deconvolution of ion kinetic‐energy release signals observed from fragmentation of metastable ions in the second field‐free region of a reversed geometry mass spectrometer. The model takes account of: (i), fragmentations occurring throughout the entire length of the field‐free region; (ii), the difference in ion beam intensity before and after the intermediate slit; (iii), the slight difference in angular acceptance between backward‐ and forward‐scattered product ions; (iv), fragmentations of singly and multiply charged ions; and (v), ion kinetic‐energy releases of any magnitude. Several examples of metastable peaks are given together with the associated kinetic‐energy release distribution and the theoretical metastable peak generated from the kinetic‐energy release distribution.