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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},
}