Small Angle X-Ray Scattering/Wide Angle X-Ray Scattering (SAXS/WAXS)
Allows automated simultaneous SAXS and WAXS measurements, grazing incidence measurements on liquid interfaces, and low-volume flow-through sampling of biomacromolecules.
Xeuss 3.0 consists of the Cu based Genix3D µ-source X-ray beam, a tiltable auxillary Cu based Genix3D µ-source X-ray beam for liquid GISAXS, an Eiger 2R 1M 2-D detector from Dectris, and a computer with XICC and XSACT installed for instrument control and data processing. The Xeuss 3.0 can accommodate solids, powders, liquids, gels, and thin films in both transmission and grazing incidence (GISAXS/GIWAXS) modes in either vacuum or air. The integrated auto pipetting robot enables high-throughput SAXS and UV-Vis absorption measurements for liquid samples.
The stages available to the Xeuss 3.0 are: standard SAXS stages (solids, powders, capillaries, gels), JSP temperature controlled capillary stage (-10 °C to 80 °C, limited from 5 °C to 70 °C for aqueous samples), linkam heater stage ( -150C to 350C) for temperature dependent SAXS/WAXS/GISAXS, Advanced GISAXS stage, humidity control stage (provides relative humidity control (in air only) in the range between 10 % and 90 % for temperatures from ambient to 60 °C), and high throughput liquid SAXS with UV/Vis absorption with the Biocube (5 °C to 70 °C). Custom stages for the Xeuss 3.0 can be made and tested with the prior approval from facility staff.
The Xeuss 3.0 can characterize features sized from 1 to 300 nm (q-range of 0.002 Å-1 to 0.65 Å-1), distinguish shape and size distributions, investigate porosity (comparable to results from BET) and interrogate crystalline structure when used in WAXS mode (2θ range of 2° to 55°, and up to 75° with the virtual detector).
Most experiments take around 2 to 4 hours to run, including experiment setup, alignment, and data processing. XSACT data analysis software is available for purchase from Xenocs if analysis needs to be carried out outside of the facility. The facility also has a few recommendations for free SAXS processing software upon request.
Hourly rate: UC Users: $85 • non-UC Users: $165
Location: CMRR Recharge Facility, room 1L, 3164 Matthews Ln, La Jolla, CA 92093
Contact: Rand Kingsford (rkingsford@ucsd.edu), Facility Engineer
Email the facility engineer to schedule a training. Apply to the CMRR FOM recharge facility (https://cmrr.ucsd.edu/resources/Recharge%20Facility%20.html) to reserve this instrument.
The UC San Diego MRSEC-MCF is a user and service facility associated with the NSF-funded UC San Diego Materials Research Science and Engineering Center, dedicated to materials characterization, assays, and sample processing.
We ask that any publications or presentations acknowledge use of these MRSEC-supported facilities with the following statement:
“The authors acknowledge the use of facilities and instrumentation supported by NSF through the UC San Diego Materials Research Science and Engineering Center (UCSD MRSEC), grant # DMR-2011924”