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@PHDTHESIS{Laurus:418948,
      author       = {Laurus, Torsten},
      othercontributors = {Weckert, Edgar and Wurth, Wilfried},
      title        = {{D}iffraction anomalous fine structure in {L}aue geometry},
      school       = {Universität Hamburg},
      type         = {Dissertation},
      address      = {Hamburg},
      publisher    = {Verlag Deutsches Elektronen-Synchrotron},
      reportid     = {PUBDB-2019-00851, DESY-THESIS-2018-043},
      series       = {DESY-THESIS},
      pages        = {108},
      year         = {2016},
      note         = {Dissertation, Universität Hamburg, 2016},
      abstract     = {This thesis deals with the further development of the
                      method of Borrmannspectroscopy and the development of the
                      novel method of diffractionanomalous fine structure in Laue
                      geometry.Borrmann spectroscopy utilizes the Borrmann effect
                      in order to enhancethe quadrupol absorption, which enables
                      studying weak quadrupoltransitions. In the present work a
                      model is developed, which describes thedependence of the
                      quadrupol enhancement on temperature and anisotropyof the
                      chemical environment. This model is used to describe the
                      Borrmannspectroscopy results obtained from a strontium
                      titanate single crystal.Furthermore, the influence of the
                      mosaicity of real crystals on thequadrupole enhancement is
                      studied by means of simulations, which arebased on the
                      dynamical theory of diffraction and a modified
                      structuremodel of barium titanate.The method of diffraction
                      anomalous fine structure (DAFS) is based onthe combination
                      of X-ray diffraction and absorption spectroscopy and
                      allowsinvestigating the local atomic structure of
                      centrosymmetric crystalsutilising the additional selectivity
                      due to diffraction. In the present workthe novel method of
                      diffraction anomalous fine struture in Laue geometry(LDAFS)
                      is developed. It utilizes the intensity of the Laue
                      geometrydiffracted beam, which experiences an altered
                      absorption due to the Borrmanneffect. Its experimental
                      applicability is verified by experiments ona barium titanate
                      single crystal and comparison with conventional
                      X-rayabsorption spectroscopy results.},
      cin          = {FS-PS},
      cid          = {I:(DE-H253)FS-PS-20131107},
      pnm          = {632 - Detector technology and systems (POF3-632)},
      pid          = {G:(DE-HGF)POF3-632},
      experiment   = {EXP:(DE-H253)D-W1-20150101 / EXP:(DE-H253)D-A1-20150101},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)29 / PUB:(DE-HGF)11},
      doi          = {10.3204/PUBDB-2019-00851},
      url          = {https://bib-pubdb1.desy.de/record/418948},
}