Lin Yang
National Synchrotron Light Source
Abstract:
The National
Synchrotron Light Source (NSLS) recently commissioned a new Small Angle
X-ray Scattering (SAXS) instrument at beamline X21. Based on a wiggler
source and equipped with a cryogenically-cooled monochromator with
interchangeable Si(111) and multilayer (ML) elements, this instrument
typically delivers ~1.1x1013 photons/sec through 0.4mm x 0.4mm
beam-defining slits to the sample and provides a q-range of
~0.005-0.3Å-1 (8KeV, ML monochromator, 230mA ring current, 2m
sample-to-detector distance). The scientific focus of this instrument is
structural characterization of soft condensed matter and biomaterials.
Besides protein solution scattering and diffraction from biological tissues,
this instrument is also used to study the structure of substrate-supported
lipid films in the grazing incidence geometry. Experiments using stacked
bilayers (a few microns thick) and single bilayers will be described.
2008 Run
Nov 19th - Dec 22nd
