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  Ultrafast isomerization initiated by X-ray core ionization

Liekhus-Schmaltz, C. E., Tenney, I., Osipov, T., Sanchez-Gonzalez, A., Berrah, N., Boll, R., et al. (2015). Ultrafast isomerization initiated by X-ray core ionization. Nature Communications, 6: 8199, pp. 1-7. doi:10.1038/ncomms9199.

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 Creators:
Liekhus-Schmaltz, Chelsea E., Author
Tenney, Ian, Author
Osipov, Timur, Author
Sanchez-Gonzalez, Alvaro, Author
Berrah, Nora, Author
Boll, Rebecca, Author
Bomme, Cedric, Author
Bostedt, Christoph, Author
Bozek, John D., Author
Carron, Sebastian, Author
Coffee, Ryan, Author
Devin, Julien, Author
Erk, Benjamin, Author
Ferguson, Ken R., Author
Field, Robert W., Author
Foucar, Lutz1, Author           
Frasinski, Leszek J., Author
Glownia, James M., Author
Gühr, Markus, Author
Kamalov, Andrei, Author
Krzywinski, Jacek, AuthorLi, Heng, AuthorMarangos, Jonathan P., AuthorMartinez, Todd J., AuthorMcFarland, Brian K., AuthorMiyabe, Shungo, AuthorMurphy, Brendan, AuthorNatan, Adi, AuthorRolles, Daniel, AuthorRudenko, Artem, AuthorSiano, Marco, AuthorSimpson, Emma R., AuthorSpector, Limor, AuthorSwiggers, Michele, AuthorWalke, Daniel, AuthorWang, Song, AuthorWeber, Thorsten, AuthorBucksbaum, Philip H., AuthorPetrovic, Vladimir S., Author more..
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              

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Free keywords: Physical sciences ; Physical chemistry ; Atomic and molecular physics
 Abstract: Rapid proton migration is a key process in hydrocarbon photochemistry. Charge migration and subsequent proton motion can mitigate radiation damage when heavier atoms absorb X-rays. If rapid enough, this can improve the fidelity of diffract-before-destroy measurements of biomolecular structure at X-ray-free electron lasers. Here we study X-ray-initiated isomerization of acetylene, a model for proton dynamics in hydrocarbons. Our time-resolved measurements capture the transient motion of protons following X-ray ionization of carbon K-shell electrons. We Coulomb-explode the molecule with a second precisely delayed X-ray pulse and then record all the fragment momenta. These snapshots at different delays are combined into a ‘molecular movie’ of the evolving molecule, which shows substantial proton redistribution within the first 12 fs. We conclude that significant proton motion occurs on a timescale comparable to the Auger relaxation that refills the K-shell vacancy.

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Language(s): eng - English
 Dates: 2014-10-082015-07-282015-09-10
 Publication Status: Published online
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 6 Sequence Number: 8199 Start / End Page: 1 - 7 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723