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Suppression of X-ra...
Suppression of X-ray-Induced Radiation Damage to Biomolecules in Aqueous Environments by Immediate Intermolecular Decay of Inner-Shell Vacancies
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- Hans, Andreas (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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- Schmidt, Philipp (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.;European XFEL, D-22869 Schenefeld, Germany.
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- Kuestner-Wetekam, Catmarna (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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- Trinter, Florian (författare)
- Deutsch Elekt Synchrotron DESY, D-22607 Hamburg, Germany.;Fritz Haber Inst Max Planck Gesell, D-14195 Berlin, Germany.
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- Deinert, Sascha (författare)
- Deutsch Elekt Synchrotron DESY, D-22607 Hamburg, Germany.
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- Bloss, Dana (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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- Viehmann, Johannes H. (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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- Schaf, Rebecca (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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- Gerstel, Miriam (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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- Saak, Clara M. (författare)
- Uppsala universitet,Institutionen för fysik och astronomi
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- Buck, Jens (författare)
- Deutsch Elekt Synchrotron DESY, D-22607 Hamburg, Germany.
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- Klumpp, Stephan (författare)
- Deutsch Elekt Synchrotron DESY, D-22607 Hamburg, Germany.
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- Hartmann, Gregor (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.;Helmholtz Zentrum Berlin HZB, D-12489 Berlin, Germany.
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- Cederbaum, Lorenz S. (författare)
- Heidelberg Univ, Phys Chem Inst, Theoret Chem, D-69120 Heidelberg, Germany.
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- Kryzhevoi, Nikolai, V (författare)
- Heidelberg Univ, Phys Chem Inst, Theoret Chem, D-69120 Heidelberg, Germany.
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- Knie, Andre (författare)
- Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.
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Univ Kassel, Inst Phys, D-34132 Kassel, Germany;Univ Kassel, CINSaT, D-34132 Kassel, Germany. Univ Kassel, Inst Phys, D-34132 Kassel, Germany.;Univ Kassel, CINSaT, D-34132 Kassel, Germany.;European XFEL, D-22869 Schenefeld, Germany. (creator_code:org_t)
- 2021-07-23
- 2021
- Engelska.
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Ingår i: The Journal of Physical Chemistry Letters. - : American Chemical Society (ACS). - 1948-7185. ; 12:30, s. 7146-7150
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The predominant reason for the damaging power of high-energy radiation is multiple ionization of a molecule, either direct or via the decay of highly excited intermediates, as, e.g., in the case of X-ray irradiation. Consequently, the molecule is irreparably damaged by the subsequent fragmentation in a Coulomb explosion. In an aqueous environment, however, it has been observed that irradiated molecules may be saved from fragmentation presumably by charge and energy dissipation mechanisms. Here, we show that the protective effect of the environment sets in even earlier than hitherto expected, namely immediately after single inner-shell ionization. By combining coincidence measurements of the fragmentation of X-ray-irradiated microsolvated pyrimidine molecules with theoretical calculations, we identify direct intermolecular electronic decay as the protective mechanism, outrunning the usually dominant Auger decay. Our results demonstrate that such processes play a key role in charge delocalization and have to be considered in investigations and models on high-energy radiation damage in realistic environments.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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Hans, Andreas
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Schmidt, Philipp
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Kuestner-Wetekam ...
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Trinter, Florian
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Deinert, Sascha
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Bloss, Dana
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Viehmann, Johann ...
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Schaf, Rebecca
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Gerstel, Miriam
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Saak, Clara M.
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Buck, Jens
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Klumpp, Stephan
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Hartmann, Gregor
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Cederbaum, Loren ...
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Kryzhevoi, Nikol ...
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Knie, Andre
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Fysikalisk kemi
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NATURVETENSKAP
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Uppsala universitet