View source for Discussion Group B4

=== GISAS: challenges and opportunities and collaborative possibilities in harnessing the potential ===
== Discussion Leaders ==

<b>
* Max Wolf 
</b>

== Presentations ==


== Discsussion Notes ==
* 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


Initial members:
* Ronald Jones (NIST, Chair)
*Max Wolff (Uppsala University)
* Alex Hexemer (Berkeley Light Source)
* Andrew Nelson (ANSTO)
* Henrich Frielinghaus (JCNS)