Soft x-ray ionization induced fragmentation of glycine
- Department of Physics and Astronomy, University of Turku, FIN-20014 Turku (Finland)
- Department of Physics, KTH, 10691 Stockholm (Sweden)
- Department of Nuclear Medicine and Radiobiology, Facility of Medicine, University of Sherbrooke, Sherbrooke, JIH 5N4 Quebec (Canada)
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{sub α} bond and the presence of the CNH{sub 2}{sup +} fragment.
- OSTI ID:
- 22420065
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 23 Vol. 140; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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