Argonne

  • Hetero-site-specific X-ray pump-probe spectroscopy for femtosecond intramolecular dynamics

    ncomms11652 f1Nature Communications 7, Article number: 11652
    A. Picón, C. S. Lehmann, C. Bostedt, A. Rudenko, A. Marinelli, T. Osipov, D. Rolles, N. Berrah, C. Bomme, M. Bucher, G. Doumy, B. Erk, K. R. Ferguson, T. Gorkhover, P. J. Ho, E. P. Kanter, B. Krässig, J. Krzywinski, A. A. Lutman, A. M. March, D. Moonshiram, D. Ray, L. Young, S. T. Pratt & S. H. Southworth
    Published 23 May 2016

  • Probing X-ray induced dynamics of molecules

    ncomms11652 f1I'm pleased to announce that my collaborator Antonio Picon has published his most recent results in Nature Communications. He uses an X-ray pump – X-ray probe concept to induce X-ray dynamics and subsequently probe them. It is one of the first experiments of its kind and uses the free electron laser at Stanford University to investigate ultrafast dynamics in molecules that happen on a femtosecond timescale. Experiments of this kind could be used in the future to better understand chemical reactions and to better understand how light interacts with matter. Particularly on ultrafast time scales.

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  • Shapes of rotating superfluid helium nanodroplets

    Classical stability versus quantum vorticiesPhys. Rev. B 95, 064510
    Charles Bernando, Rico Mayro P. Tanyag, Curtis Jones, Camila Bacellar, Maximilian Bucher, Ken R. Ferguson, Daniela Rupp, Michael Ziemkiewicz, Luis F. Gomez, Adam S. Chatterley, Tais Gorkhover, Maria Mueller, John Bozek, Sebastian Carron, Justin Kwok, Samuel L. Butler, Thomas Moeller, Christoph Bostedt, Oliver Gessner, and Andrey F. Vilesov
    Published 16 February 2017

  • Ultrafast x-ray-induced nuclear dynamics in diatomic molecules

    PRA Picon 2016 07This is a similar study to our work published in Nature Communications earlier this year. Here, we investigate diatomic molecules and use a two-color X-ray pump–X-ray probe approach. The pump pulse arrives first and induces dynamics, whereas the probe pulse arrives at a certain time delay and allows us to look at the induced dynamics. Theoretic predictions align well with the observed dynamics, such that we establish a microscopic understanding of the processes. The work has been mainly driven by A. Picon and C.S. Lehmann, whom I particularly congratulate to this paper. Please find more at.

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