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Metastable ion Characteristics. XXXXIII—separation and comparison of collisional activation spectra and metastable ion spectra
Author(s) -
Wachs Timothy,
Van De Sande C. C.,
McLafferty F. W.
Publication year - 1976
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.1210111213
Subject(s) - ion , metastability , kinetic energy , spectral line , atomic physics , chemistry , collision , physics , organic chemistry , quantum mechanics , astronomy , computer security , computer science
Additional ion acceleration in a separate collision chamber in the field free drift region makes it possible to add extra kinetic energy to those ions undergoing decomposition in the chamber. In this way product ions formed in the collision chamber (the [collisional activation] spectrum) can be distinguished from ions formed from decompositions in the low pressure portion of the field free drift region (the [metastable ion] spectrum). This technique is used to show that often a relatively small proportion of the ions in the [pure] collisional activation spectrum arises from processes which produce the metastable ion spectrum.