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Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser.

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Title: Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser.
Authors: Guillemin, R.1 (AUTHOR), Inhester, L.2 (AUTHOR), Ilchen, M.3,4 (AUTHOR), Mazza, T.3 (AUTHOR), Boll, R.3 (AUTHOR), Weber, Th.5 (AUTHOR), Eckart, S.6 (AUTHOR), Grychtol, P.3 (AUTHOR), Rennhack, N.3 (AUTHOR), Marchenko, T.1 (AUTHOR), Velasquez, N.1 (AUTHOR), Travnikova, O.1 (AUTHOR), Ismail, I.1 (AUTHOR), Niskanen, J.7 (AUTHOR), Kukk, E.7 (AUTHOR), Trinter, F.4,8 (AUTHOR), Gisselbrecht, M.9 (AUTHOR), Feifel, R.10 (AUTHOR), Sansone, G.11 (AUTHOR), Rolles, D.12 (AUTHOR)
Source: Structural Dynamics. Sep2023, Vol. 10 Issue 5, p1-15. 15p.
Subjects: X-ray lasers, Free electron lasers, Isotopologues, Isotopes, Structural dynamics, X-ray absorption, Lasers
Abstract: Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H2O2+, D2O2+, and HDO2+, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms. [ABSTRACT FROM AUTHOR]
Copyright of Structural Dynamics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser.
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  Data: <searchLink fieldCode="JN" term="%22Structural+Dynamics%22">Structural Dynamics</searchLink>. Sep2023, Vol. 10 Issue 5, p1-15. 15p.
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  Data: Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H2O2+, D2O2+, and HDO2+, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Structural Dynamics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1063/4.0000197
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        Text: English
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      – SubjectFull: Isotopologues
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