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MOMAC: a SAXS/WAXS laboratory instrument dedicated to nanomaterials

Olivier Taché 1 Stéphan Rouzière 2 Philippe Joly 2 Mohamed Amara 2 Blaise Fleury 1 Antoine Thill 1 Pascale Launois 2 Olivier Spalla 1 Benjamin Abécassis 2, * 
* Corresponding author
1 LIONS - Laboratoire Interdisciplinaire sur l'Organisation Nanométrique et Supramoléculaire
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : This article presents the technical characteristics of a newly built small-and wide-angle X-ray scattering (SAXS/WAXS) apparatus dedicated to structural characterization of a wide range of nanomaterials in the powder or dispersion form. The instrument is based on a high-flux rotating anode generator with a molybdenum target, enabling the assessment of highly absorbing samples containing heavy elements. The SAXS part is composed of a collimation system including a multilayer optic and scatterless slits, a motorized sample holder, a vacuum chamber, and a two-dimensional image-plate detector. All the control command is done through a TANGO interface. Normalization and data correction yield scattering patterns at the absolute scale automatically with a q range from 0.03 to 3.2 A ˚ À1. The WAXS part features a multilayer collimating optic and a two-dimensional image-plate detector with variable sample-to-detector distances. The accessible q range is 0.4–9 A ˚ À1 , ensuring a large overlap in q range between the two instruments. A few examples of applications are also presented, namely coupled SAXS/WAXS structure and symmetry determination of gold nanocrystals in solution and characterization of imogolite nanotubes and iron-filled carbon nanotube samples.
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Submitted on : Tuesday, September 13, 2016 - 2:15:41 PM
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Olivier Taché, Stéphan Rouzière, Philippe Joly, Mohamed Amara, Blaise Fleury, et al.. MOMAC: a SAXS/WAXS laboratory instrument dedicated to nanomaterials. Journal of Applied Crystallography, International Union of Crystallography, 2016, 49 (5), ⟨10.1107/S1600576716012127⟩. ⟨cea-01365377⟩



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