D2AM, a Beamline with a High-Intensity Point-Focusing Fixed-Exit Monochromator for Multiwavelength Anomalous Diffraction Experiments

Ferrer, J.-L.; Simon, J.-P.; Bérar, J.-F.; Caillot, B.; Fanchon, E.; Kaïkati, O.; Arnaud, S.; Guidotti, M.; Pirocchi, M.; Roth, M.

doi:10.1107/S0909049598004257

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Figure 8
Cross-section views of the monochromated beam given by the fluorescent screen installed just after crystal 2 of the monochromator. (a) Standard view of the beam after crystal 2 curvature optimization. (b), (c), (d) Crystal with conical deformation observed at three distinct values of the tuning angle: the diffracting area is split into two symmetrical parts. (e) Crystal with a strong twist deformation. (f), (g), (h) Crystal with both defects (conicity and twist) observed at three distinct values of the tuning angle. The diffracting area is split into two asymmetrical parts observed.

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 5| Part 6| November 1998| Pages 1346-1356

https://doi.org/10.1107/S0909049598004257

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