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Title: Soft x-ray ionization induced fragmentation of glycine

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.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [5]
  1. Department of Physics and Astronomy, University of Turku, FIN-20014 Turku (Finland)
  2. (Estonia)
  3. Department of Physics, KTH, 10691 Stockholm (Sweden)
  4. Department of Nuclear Medicine and Radiobiology, Facility of Medicine, University of Sherbrooke, Sherbrooke, JIH 5N4 Quebec (Canada)
  5. (MatSurf), FIN-20014 Turku (Finland)
Publication Date:
OSTI Identifier:
22420065
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 23; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; CARBON; CATIONS; ELECTRONS; FRAGMENTATION; GLYCINE; IONIZATION; MOLECULES; SOFT X RADIATION