SAXS/Small Angle X-ray Scattering
| X-ray scattering at wide-, small- and ultra-small angles can provide structural information over several length scales (from Å up to 100 nm and beyond). While WAXS refers practically to X-ray diffraction (d-spacing less than 1 nm to a few nanometers), SAXS probes relatively large-scale structures (appr. 1-100nm, while USAXS may even detect micron-sized features. Moreover, SAXS includes not only the diffraction of large lattice spacing, of the order of tens, hundreds, or even thousands of interatomic distances, but also the scattering by perturbed or non-periodic structures of amorphous and mesomorphic materials (including e.g. polymeric, supramolecular, nano-porous and nano-structured materials as well as nano-composites). A proper structure and morphology analysis of many systems requires information using a combination of SAXS and WAXS and nowadays there are instruments employing both techniques utilizing a single X-ray source but with two different cameras/detectors. Another common configuration in X-ray instrumentation is grazing Incidence SAXS (GISAXS), which allows the study of nanostructured surfaces and thin films. |
0.029 – 4 nm-1
GeniX3D beam-delivery system.
40-μm-microfocus sealed tube, Cu anode (50 kV, 0.6 mA, 30 W).
FOX 3D single reflection aspheric multilayer optic (8 KeV Cu Kα X-ray beam)
Αnti-scattering collimation scheme with two pinhole blocks, each of which consists of four collimation apertures corresponding to the four possible configurations: very high flux (VHF), medium resolution (MR), high resolution (HR), and very high resolution (VHR).
Sample under vacuum environment.
Feedthroughs available.
Sample Stage Assembly with motorized X-Z translations (± 17.5 mm) for sample positioning. Additional motorization for sample
rotation (>180°) around the X-ray beam (anisotropic samples and larger azimuthal coverage).
In vacuum 2D Pilatus3 Hybrid pixel detector 1x100K module featuring:
Single photon counting with near zero readout noise and dark current
Retrigger technology for non- paralyzable counting, high accuracy at high count rates.
Pixel size of 172 μm with a point spread function of 1 pixel
Detector active area : 83,8 x 33,5 mm2
Static (938 mm from the sample).
Beamstop less data acquisition
Static (79 mm from the sample and at 33° with respect to the direct beam) 2D Pilatus3 Hybrid pixel detector module placed inside the vacuum sample chamber enabling to detect WAXS angle up to 2Theta 60°.
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Multiple sample holder (16 slots) for
solid samples
Sample holder for large objects,
measurable area of 35x35 mm²
Multiple capillaries holder (6 slots)
GeniX3D Cu High Flux Very Long Focus (HFVL). Complete x-ray generator equipped with a high brightness X-ray tube (30W/30μm) and a FOX 3D Cu optic
Incident Beam Collimation Assembly Scatterless.
Includes two vacuum compatible scatterless slits modules for beam collimation, vacuum tube and vacuum couplings.
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EIGER2 R 1M DECTRIS detector-vacuum compatible.
Eiger2 R Hybrid pixel photon counting detector (1M model) with 450 μm silicon sensor thickness.
Motorized translation detector along beam axis in vacuum.
Continuous translation motion > 1750mm.
Shortest sample to detector distance < 45 mm, maximum sample to detector distance : > 1800 mm
Beamstop less data acquisition
Moving WAXS module with Eiger2 R
500K
3-axis motorized Eiger2 R 500K detector for moving detector in a full quadrant of forward scattering (for 1/8th of Ewald sphere collection).
Achieved 2Theta range for scattering is from 0° to 90°.
High temperature sample stage (-150°C to 350°C)
Integrated temperature stage based on Linkam HFSX350.
Controlled through the operation software on the Xeuss control PC
Vacuum compatible low scattering flow cell for measurement on
liquids.
Provided with set of accessories for manual injection with large volume as well as with volumes down to a few μL with a no dead volume solution from syringe to the cell.
Stage assembly composed of 1 motorized rotation stage Omega for GISAXS.
Provided with a GISAXS stage holder.
Scanning of samples possible through motorized translation X
stage.
Specifications : +5/-3° ,
Precision= 0,002°
Rack of 8 cells mounted on magnets for easy positioning. Each cell
includes covers and spacers of thickness 0.5 and 1 mm. Also
suitable for liquids.
