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Helium cryostat synchrotron charge densities determined using a large CCD detector – the upgraded beamline D3 at DESY
Author(s) -
Morgenroth Wolfgang,
Overgaard Jacob,
Clausen Henrik F.,
Svendsen Helle,
Jørgensen Mads R. V.,
Larsen Finn K.,
Iversen Bo B.
Publication year - 2008
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889808024643
Subject(s) - desy , cryostat , beamline , physics , optics , detector , diffraction , nuclear physics , synchrotron radiation , diffractometer , spectrometer , neutron diffraction , atomic physics , beam (structure) , condensed matter physics , scanning electron microscope , superconductivity
A 165 mm Mar CCD detector has been fitted on a large Huber four‐circle diffractometer together with a helium cryostat at beamline D3 at Hasylab, DESY in Hamburg. This setup allows fast collection of accurate, short‐wavelength, very low temperature X‐ray diffraction data for charge‐density analysis. As a test example, diffraction data have been collected in 10 h on a hydrogen‐bonded network system with 15 unique atoms, and the electron density was modelled with the multipole formalism in an X–N procedure using matching‐temperature neutron diffraction data collected at Institut Laue Langevin, Grenoble in France.