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Soft x-ray ionization induced fragmentation of glycine
KTH, School of Engineering Sciences (SCI), Physics, Atomic and Molecular Physics.ORCID iD: 0000-0001-7389-5501
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2014 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 140, no 23, 234305- p.Article in journal (Refereed) Published
Abstract [en]

X-ray absorption commonly involves dissociative core ionization producing not only momentum correlated charged fragments but also low-and high-energy electrons capable of inducing damage in living tissue. This gives a natural motivation for studying the core ionization induced fragmentation processes in biologically important molecules such as amino acids. Here the fragmentation of amino acid glycine following carbon 1s core ionization has been studied. Using photoelectron-photoion-photoion coincidence technique, a detailed analysis on fragmentation of the sample molecule into pairs of momentum correlated cations has been carried out. The main characteristics of core ionization induced fragmentation of glycine were found to be the rupture of the C-C a bond and the presence of the CNH2+ fragment.

Place, publisher, year, edition, pages
2014. Vol. 140, no 23, 234305- p.
Keyword [en]
Amino-Acids, Dissociative Photoionization, Murchison Meteorite, Spectroscopy, Coincidence, Molecules, Dynamics, Methionine, Excitation, Cysteine
National Category
Chemical Sciences Physical Sciences
URN: urn:nbn:se:kth:diva-148283DOI: 10.1063/1.4882648ISI: 000337886200026ScopusID: 2-s2.0-84903215622OAI: diva2:736589
Swedish Research Council

QC 20140807

Available from: 2014-08-07 Created: 2014-08-05 Last updated: 2014-08-07Bibliographically approved

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Rachlew, Elisabeth
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