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@ARTICLE{Reinhardt:315130,
      author       = {Reinhardt, Juliane and Hoppe, Robert and Hofmann, Georg and
                      Damsgaard, Christian D. and Patommel, Jens and Baumbach,
                      Christoph and Baier, Sina and Rochet, Amelie and Grunwaldt,
                      Jan-Dierk and Falkenberg, Gerald and Schroer, Christian},
      title        = {{B}eamstop-{B}ased {L}ow-{B}ackground {P}tychography to
                      {I}mage {W}eakly {S}cattering {O}bjects},
      journal      = {Ultramicroscopy},
      volume       = {173},
      issn         = {0304-3991},
      address      = {Amsterdam},
      publisher    = {Elsevier Science},
      reportid     = {PUBDB-2016-05652},
      pages        = {52 - 57},
      year         = {2017},
      note         = {(c) Elsevier B.V. Post referee full text in progress
                      (embargo 1 year from 14 November 2016). P05K13OD4 and
                      05K10OD1},
      abstract     = {In recent years, X-ray ptychography has been established as
                      a valuable tool for high-resolution imaging. Nevertheless,
                      the spatial resolution and sensitivity in coherent
                      diffraction imaging are limited by the signal that is
                      detected over noise and over background scattering.
                      Especially, coherent imaging of weakly scattering specimens
                      suffers from incoherent background that is generated by the
                      interaction of the central beam with matter along its
                      propagation path in particular close to and inside of the
                      detector. Common countermeasures entail evacuated flight
                      tubes or detector-side beamstops, which improve the
                      experimental setup in terms of background reduction or
                      better coverage of high dynamic range in the diffraction
                      patterns. Here, we discuss an alternative approach: we
                      combine two ptychographic scans with and without beamstop
                      and reconstruct them simultaneously taking advantage of the
                      complementary information contained in the two scans. We
                      experimentally demonstrate the potential of this scheme for
                      hard X-ray ptychography by imaging a weakly scattering
                      object composed of catalytic nanoparticles and provide the
                      analysis of the signal-to-background ratio in the
                      diffraction patterns.},
      cin          = {FS-PETRA / FS-PE / DOOR},
      ddc          = {570},
      cid          = {I:(DE-H253)FS-PETRA-20140814 / I:(DE-H253)FS-PE-20120731 /
                      I:(DE-H253)HAS-User-20120731},
      pnm          = {6213 - Materials and Processes for Energy and Transport
                      Technologies (POF3-621) / 6G3 - PETRA III (POF3-622) /
                      VH-VI-403 - In-Situ Nano-Imaging of Biological and Chemical
                      Processes $(2015_IFV-VH-VI-403)$},
      pid          = {G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G3 /
                      $G:(DE-HGF)2015_IFV-VH-VI-403$},
      experiment   = {EXP:(DE-H253)P-P06-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000394078000010},
      pubmed       = {pmid:27912167},
      doi          = {10.1016/j.ultramic.2016.11.005},
      url          = {https://bib-pubdb1.desy.de/record/315130},
}