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MOMAC: a SAXS/WAXS laboratory instrument dedicated to nanomaterials
Author(s) -
Taché Olivier,
Rouzière Stéphan,
Joly Philippe,
Amara Mohamed,
Fleury Blaise,
Thill Antoine,
Launois Pascale,
Spalla Olivier,
Abécassis Benjamin
Publication year - 2016
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/s1600576716012127
Subject(s) - small angle x ray scattering , materials science , collimated light , detector , scattering , characterization (materials science) , optics , nanomaterials , nanotechnology , laser , physics
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 Å −1 . 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 Å −1 , 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.