Electron transfer-induced fragmentation in (bio)molecules by atom-molecule collisions: negative ion formation

Research output: Chapter in Book/Report/Conference proceedingChapter


Ion-pair formation to gas phase molecules induced by electron transfer has been studied by investigating the products of collisions between fast potassium atoms and target molecules using a crossed molecular-beam technique. The negative ions formed in such collisions are TOF mass analysed. As far as (bio)molecules are concerned, TOF mass spectra at different collision energies reveal interesting anionic patterns with reduced fragmentation at lower impact energies. In the unimolecular decomposition of the temporary negative ion (TNI), complex internal rearrangement may involve the cleavage and formation of new bonds. In this chapter we report some of the recent achievements in negative ion formation of some polyatomic molecules with the special attention to biological relevant targets.
Original languageUnknown
Title of host publicationRadiation Damage to Biomolecular Systems
EditorsG. Garcia, M.C. Fuss
Place of PublicationGermany
ISBN (Print)DOI 10.1007/978-94-007-2564-5 3
Publication statusPublished - 1 Jan 2011

Publication series

NameBiological and Medical Physics, Biomedical Engineering

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