% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Gommes:894027,
      author       = {Gommes, Cedric and Zorn, Reiner and Jaksch, Sebastian and
                      Frielinghaus, Henrich and Holderer, Olaf},
      title        = {{I}nelastic neutron scattering analysis with time-dependent
                      {G}aussian-field models},
      journal      = {The journal of chemical physics},
      volume       = {155},
      number       = {2},
      issn         = {1089-7690},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2021-02993},
      pages        = {024121 -},
      year         = {2021},
      abstract     = {Converting neutron scattering data to real-space
                      time-dependent structures can only be achieved through
                      suitable models, which is particularly challenging for
                      geometrically disordered structures. We address this problem
                      by introducing time-dependent clipped Gaussian field models.
                      General expressions are derived for all space- and
                      time-correlation functions relevant to coherent inelastic
                      neutron scattering for multiphase systems and arbitrary
                      scattering contrasts. Various dynamic models are introduced
                      that enable one to add time-dependence to any given spatial
                      statistics, as captured, e.g., by small-angle scattering. In
                      a first approach, the Gaussian field is decomposed into
                      localized waves that are allowed to fluctuate in time or to
                      move either ballistically or diffusively. In a second
                      approach, a dispersion relation is used to make the spectral
                      components of the field time-dependent. The various models
                      lead to qualitatively different dynamics, which can be
                      discriminated by neutron scattering. The methods of this
                      paper are illustrated with oil/water microemulsion studied
                      by small-angle scattering and neutron spin-echo. All
                      available data—in both film and bulk contrasts, over the
                      entire range of q and τ—are analyzed jointly with a
                      single model. The analysis points to the static large-scale
                      structure of the oil and water domains while the interfaces
                      are subject to thermal fluctuations. The fluctuations have
                      an amplitude of around 60 Å and contribute to $30\%$ of the
                      total interface area},
      cin          = {JCNS-FRM-II / JCNS-1 / JCNS-4 / MLZ},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-4-20201012 /
                      I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)KWS2-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34266279},
      UT           = {WOS:000692373500006},
      doi          = {10.1063/5.0053446},
      url          = {https://juser.fz-juelich.de/record/894027},
}