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Journal articles
MOMAC: a SAXS/WAXS laboratory instrument dedicated to nanomaterials
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.
Cited literature [22 references]
https://hal-cea.archives-ouvertes.fr/cea-01365377
Contributor : Serge Palacin Connect in order to contact the contributor
Submitted on : Tuesday, September 13, 2016 - 2:15:41 PM
Last modification on : Thursday, July 1, 2021 - 4:43:12 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 1:35:58 PM
Contributor : Serge Palacin Connect in order to contact the contributor
Submitted on : Tuesday, September 13, 2016 - 2:15:41 PM
Last modification on : Thursday, July 1, 2021 - 4:43:12 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 1:35:58 PM
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