MIT MRSEC - Materials Reseach Science and Engineering Center

X-ray Diffraction Shared Experimental Facility

SAXSLAB small angle X-ray scattering system (SAXS/WAXS/GISAXS/GIWAXS)

Instrument Status

This instrument is currently available. If you would like to be trained to use the SAXSLAB system, please contact facility staff.

Instrument Description

The SAXSLAB instrument is setup to perform transmission small or wide angle X-ray scattering on freestanding samples, powders prepared in kapton tape, liquids in disposable or resealable capillaries, gels in sandwich cells with mica windows. Also, there is capability to perform grazing incidence small or wide angle X-ray scattering (GI-SAXS/WAXS) on nanostructured surfaces.

Standard training allows you to perform automated SAXS/WAXS/GI-SAXS/GI-WAXS measurements with a variable sample to detector distance dependent on the sizes that are indented to be probed; for SAXS (30-2300 Å) for WAXS (3-70 Å).

SAXS is particularly suited to study the morphological characteristics of internal interfaces of contrasting electron density, such as co-polymers, polymer-solvent, or solid-pore interfaces as well as nanostructured composites or nanoparticles in solution. The larger the difference in electron density, the greater the contribution of the scattered intensity.

The SAXSLAB system uses a Rigaku 002 microfocus X-ray source with an Osmic staggered parabolic multilayer optics to focus the beam crossover at the second pinhole. It has two sets of JJ X-ray 4 jaw collimation slits that are tunable from 0.02 to 1 mm. Samples are introduced into a large vacuum chamber that is pumped down to 0.08 mbar. The sample stage has x-y travel and theta tilt for grazing incidence SAXS measurements and the DECTRIS PILATUS 300K detector moves from from 100 mm to 1500 mm from the sample.

SAXS resources

SAXSLAB Ganesha System overview

SASview software

BornAgain Project

NIST Small Angle Scattering Portal

Looking At Nothing Blog



Upcoming Instrument Training

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Documentation and Downloads