A new small angle X-ray scattering station at NSRRC

Abstract

Using the X-ray source generated by a newly installed superconducting wavelength shifter at the Taiwan Light Source storage ring of the National Synchrotron Radiation Research Center (NSRRC), we have constructed an X-ray beamline equipped with a small angle X-ray scattering (SAXS) station for nanostructure research. This beamline can deliver a photon flux of ∼3×1011photons/s in the energy range of 5–22keV, with a beam divergence of ∼0.3mrad in vertical direction. With the new SAXS end station we have studied PtRu nanoparticles embedded in fine carbon grains using anomalous SAXS. We illustrate other features of the SAXS instrument with a few more measurements on phase transitions of diblock-polymers, structural evolution of aluminium alloys under an artificial aging at high temperature, and folding and unfolding of lysozyme in aqueous solutions.