Soft x-ray ionization induced fragmentation of glycine
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
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.
Amino-Acids, Dissociative Photoionization, Murchison Meteorite, Spectroscopy, Coincidence, Molecules, Dynamics, Methionine, Excitation, Cysteine
Chemical Sciences Physical Sciences
IdentifiersURN: urn:nbn:se:kth:diva-148283DOI: 10.1063/1.4882648ISI: 000337886200026ScopusID: 2-s2.0-84903215622OAI: oai:DiVA.org:kth-148283DiVA: diva2:736589
FunderSwedish Research Council
QC 201408072014-08-072014-08-052014-08-07Bibliographically approved