Simultaneous small- and wide-angle scattering at high X-ray energies.
Combined small- and wide-angle X-ray scattering (SAXS/WAXS) is a powerful technique for the study of materials at length scales ranging from atomic/molecular sizes (a few angstroms) to the mesoscopic regime ( approximately 1 nm to approximately 1 microm). A set-up to apply this technique at high X-ray energies (E > 50 keV) has been developed. Hard X-rays permit the execution of at least three classes of investigations that are significantly more difficult to perform at standard X-ray energies (8-20 keV): (i) in situ strain analysis revealing anisotropic strain behaviour both at the atomic (WAXS) as well as at the mesoscopic (SAXS) length scales, (ii) acquisition of WAXS patterns to very large q (>20 A(-1)) thus allowing atomic pair distribution function analysis (SAXS/PDF) of micro- and nano-structured materials, and (iii) utilization of complex sample environments involving thick X-ray windows and/or samples that can be penetrated only by high-energy X-rays. Using the reported set-up a time resolution of approximately two seconds was demonstrated. It is planned to further improve this time resolution in the near future.
Daniels
J E
JE
ID15, European Synchrotron Radiation Facility, Grenoble, France.
Pontoni
D
D
Hoo
Rui Ping
RP
Honkimäki
V
V
D000818:Animals; D001842:Bone and Bones / Q000737:chemistry*; D002417:Cattle; D012542:Scattering, Radiation; D053838:Scattering, Small Angle; D014961:X-Ray Diffraction / Q000379:methods*; D014965:X-Rays