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O: Fachverband Oberflächenphysik

O 42: Poster: Organic-Inorganic Hybrid Systems and Organic Films

O 42.15: Poster

Dienstag, 13. März 2018, 18:15–20:30, Poster A

Analysis of normal incidence X-ray standing wave data considering non-dipolar effects — Markus Franke, Gerben van Straaten, Giuseppe Mercurio, François C. Boquet, Serguei Soubatch, F. Stefan Tautz, and •Christian Kumpf — Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich, Germany and Jülich Aachen Research Alliance (JARA) - Fundamentals of Future Information Technology

Normal incidence x-ray standing wave (NIXSW) is the most established technique for determining the vertical structure at interfaces and surfaces with sub-Angstrom accuracy and chemical sensitivity. However, non-dipolar contributions to the photoemitted electron yield are an issue, in particular since normal incidence conditions are in practice never met. An angle-dependent data analysis is indispensable. In the absence of user-friendly and well-documented software we developed the program ``Torricelli'' for analyzing NIXSW data. It is open-source, python-based and has an easy-to-use graphical user interface. Data output in an Argand-diagram is included.