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@ARTICLE{Roseker:402203,
      author       = {Roseker, Wojciech and Hruszkewycz, S. O. and Lehmkühler,
                      F. and Walther, M. and Schulte-Schrepping, H. and LEE,
                      SOOHEYONG and Osaka, T. and Strüder, L. and Hartmann, R.
                      and Sikorski, M. and Song, S. and Robert, A. and Fuoss, P.
                      H. and Sutton, M. and Stephenson, G. B. and Grübel, G.},
      title        = {{T}owards ultrafast dynamics with split-pulse {X}-ray
                      photon correlation spectroscopy at free electron laser
                      sources},
      journal      = {Nature Communications},
      volume       = {9},
      number       = {1},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {PUBDB-2018-01732},
      pages        = {1704},
      year         = {2018},
      abstract     = {One of the important challenges in condensed matter science
                      is to understand ultrafast, atomic-scale fluctuations that
                      dictate dynamic processes in equilibrium and non-equilibrium
                      materials. Here, we report an important step towards
                      reaching that goal by using a state-of-the-art perfect
                      crystal based split-and-delay system, capable of splitting
                      individual X-ray pulses andintroducing femtosecond to
                      nanosecond time delays. We show the results of an ultrafast
                      hard X-ray Photon Correlation Spectroscopy experiment at
                      LCLS where split X-ray pulses were used to measure the
                      dynamics of gold nanoparticles suspended in hexane. We show
                      how reliable speckle contrast values can be extracted even
                      from very low intensity free electron laser(FEL) speckle
                      patterns by applying maximum likelihood fitting, thus
                      demonstrating the potential of a split-and-delay approach
                      for dynamics measurements at FEL sources. This will enable
                      the characterization of equilibrium and, importantly also
                      reversible non-equilibrium processes in atomically
                      disordered materials.},
      cin          = {FS-CXS / FS-BT},
      ddc          = {500},
      cid          = {I:(DE-H253)FS-CXS-20130727 / I:(DE-H253)FS-BT-20120731},
      pnm          = {6215 - Soft Matter, Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-6215},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29703980},
      UT           = {WOS:000431008800001},
      doi          = {10.1038/s41467-018-04178-9},
      url          = {https://bib-pubdb1.desy.de/record/402203},
}