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Influence of collision gas on doubly charged ion mass spectra

✍ Scribed by J. R. Regalado; W. M. Holbrook; D. B. Bostwick; T. F. Moran

Publisher: John Wiley and Sons
Year: 1990
Tongue: English
Weight: 573 KB
Volume: 25
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210250311

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✦ Synopsis

The influence of the collision gas on doubly charged ion mass spectra of a selected number of hydrocarbons has been examined. Relative abundances of various product ions in 2E spectra, resulting from charge exchange collisions of doubly charged hydrocarbon ions, do not vary drastically as the collision gas is varied. However, the absolute intensities of these doubly charged ion mass spectra increase significantly when the collision gas is changed from argon to methane to isobutane. Thwe observations are rationalized in terms of a multichannel diabatic curve crossing model.

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