Discussion Group B4
GISAS: challenges and opportunities and collaborative possibilities in harnessing the potential
- Max Wolf
- There is a huge potential and a lot of possible applications of GISAS from different fields such as self assembly, magnetism, superconductivity, biology, solid-liquid boundaries and dynamics or surface exitations which have been identified.
- Past GISAS studies tend to apply "conventional - quasi kinematic" scattering techniques to grazing incidence geometery.
- Only a few studies take advantaged of Yoneda scattering
- The opportunity of specially designed samples for channeling waves should be investigated.
- For depth resolved measurements of two surfaces in contact with each other the resolution function needs to be known extremely well. Tails of the resolution function must be avoided.
- Information and specification of current instrumentation is not standardized and summarized.
- There are simulation tools out there such as: Bornagain, FitGISAS, ISGISAXS, PyGISAXS and HIGISAXS. There nonetheless remains a large and pressing need for better theoretical understanding and analysis methods.
- "Education" beyond the kinematic theory is limited.
The Session identified this as an area appropriate for a new working group with following staged activities:
- Round Robin sample (CdSe particles in polymer on CrAu)
- Analysis and new opportunities
- Analysis - can we go beyond DWBA?
- wave amplitude amplification and explore channeling
- How to distribute data: Corrected? Transformed? What is Q? Should it be defined in the laboratory frame or the sample frame?
- Teaching of dynamical theory
- Ronald Jones (NIST, Chair)
- Max Wolff (Uppsala University)
- Alex Hexemer (Berkeley Light Source)
- Andrew Nelson (ANSTO)
- Henrich Frielinghaus (JCNS)