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@ARTICLE{Chang:189241,
      author       = {Chang, S and Dwyer, Christian and Boothroyd, Christopher
                      Brian and Dunin-Borkowski, Rafal},
      title        = {{O}ptimising electron holography in the presence of partial
                      coherence and instrument instabilities},
      journal      = {Ultramicroscopy},
      volume       = {151},
      issn         = {0304-3991},
      address      = {Amsterdam},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2015-02429},
      pages        = {37 - 45},
      year         = {2015},
      abstract     = {Off-axis electron holography provides a direct means of
                      retrieving the phase of the wavefield in a transmission
                      electron microscope, enabling measurement of electric and
                      magnetic fields at length scales from microns to nanometers.
                      To maximise the accuracy of the technique, it is important
                      to acquire holograms using experimental conditions that
                      optimise the phase resolution for a given spatial
                      resolution. These conditions are determined by a number of
                      competing parameters, especially the spatial coherence and
                      the instrument instabilities. Here, we describe a simple,
                      yet accurate, model for predicting the dose rate and
                      exposure time that give the best phase resolution in a
                      single hologram. Experimental studies were undertaken to
                      verify the model of spatial coherence and instrument
                      instabilities that are required for the optimisation. The
                      model is applicable to electron holography in both standard
                      mode and Lorentz mode, and it is relatively simple to
                      apply.},
      cin          = {PGI-5},
      ddc          = {570},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000351237800006},
      doi          = {10.1016/j.ultramic.2014.11.019},
      url          = {https://juser.fz-juelich.de/record/189241},
}