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HECUS S3-Micro |
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| Introduction to SAXS, GISAX Small-angle X-ray scattering (SAXS) is a small-angle scattering technique where the elastic scattering of X-rays (wavelength 0.1 ... 0.2 nm) by a sample which has inhomogeneities in the nm-range, is recorded at very low angles (typically 0.1 - 10°). This angular range contains information about the shape and size of macromolecules, characteristic distances of partially ordered materials, pore sizes, and other data. SAXS is capable of delivering structural information of macromolecules between 5 and 25 nm, of repeat distances in partially ordered systems of up to 150 nm. USAXS (ultra-small angle X-ray scattering) can resolve even larger dimensions. SAXS is used for the determination of the microscale or nanoscale structure of particle systems in terms of such parameters as averaged particle sizes, shapes, distribution, and surface-to-volume ratio. The materials can be solid or liquid and they can contain solid, liquid or gaseous domains (so-called particles) of the same or another material in any combination. Tthe structure of ordered systems like lamellae, and fractal-like materials can also be studied. The method is accurate, non-destructive and requires only a minimum of sample preparation. Applications are very broad and include colloids of all types, metals, cement, oil, polymers, plastics, proteins, foods and pharmaceuticals and can be found in research as well as in quality control. The S3 is a self contained modular SAXS system that can be eqipped with a variety of different X-Ray sources. The S3 is ideal for modeling results in advance of work to be carried out on a Synchrotron light source. S3-MICRO is powered by an ultra-brilliant point microfocus source (GENIX-Fox 3D, Xenocs), exclusively designed for Hecus. The SAXS/SWAXS-system provides the highest X-ray flux of any SAXS system presently available on the market. With a brilliance higher than 1010, it matches that of bending-magnet synchrotron SAXS beamlines - at a source power of only 50 Watt. Thus S3-MICRO opens entirely new perspectives for laboratory x-ray scattering. Grazing-Incidence Small-Angle X-ray Scattering (GISAXS) is a method for characterizing nanoscale density correlations and/or the shape of nanoscale objects on surfaces, interfaces, and thin films. GISAXS combines features from Small-Angle X-ray Scattering (the mesoscopic length scale, incident beam definition by multiple slits, area detector) and diffuse X-ray Reflectivity (the scattering geometry and sample goniometer). |
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| Collagen Fiber (rat tail tendon 15 min) | Polyethylene (Lupolen 2 mins) | Beam Focus in detector plane Peak brilliance ~ 1010 ph/(s.mm².mrad².%BW) |
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Silver Behenate (1 min) |
Polyethylene (Lupolen 2 mins) |
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Lipid Film GISAXS (10 mins) |
50nm Au Film on Glass XRR (10 mins) |
| Specifications S3 SAXS GISAXS X-ray diffraction system |
| Source/Optics | GeniX 50 Watt microfocus source with customized FOX-3D single-bounce mulitilayer point focussing optics – exclusive for Hecus S3-MICRO (Xenocs, Grenoble) |
| Collimator | Hecus System3 2D-point collimator, min. divergence 0.4 x 0.9 mrad² |
| Spot area at sample (min.) Flux at sample (max.) |
~ 0.02 mm² (0.07 x 0.3 vert./horiz.) ~ 108 ph/s |
| Brilliance | ~ 1010 ph/s.mm².mrad².%BW |
| SAXS range for Cu Kα | 0.003 < q < 0.6 Å-1 , q=4π.sinΘ / λ 2000 Å > d > 10 Å |
| WAXS range (2Ө) for linear PSD |
Standard: 18 – 26 ° 2Θ, corresponding to Bragg spacings of 4.9 – 3.3 Å, with Cu Kα. Other ranges, or image plate, optional |
| Detectors | Photonic Science 2D-CCD: choice of 50, 66 or 75 mm input size, 29 x 29 μm²/pixel; Pilatus100K Pixel Detector (as of January 2009) Hecus linear PSD-50M (54 μm/channel) |
| System Control | Integrated hard- and software (LabView-based) control unit for all system components |
| Software | Hecus EasySAXS and SAXview software for all SAXS specific functions – particle size, inner surface etc |
| Home | On-line request form | Email |Related| |
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| Micro Photonics Inc. | |
| PO
Box 50443 Irvine, CA 92619-0443 Tel: (949) 461-9292 Fax: (949) 461-9232 |
PO
Box 3129 Allentown, PA 18106-0129 Tel: (610) 366-7103 Fax: (610) 366-7105 |
