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Labs! Visit on GALAXI - High Brilliance High Resolution Laboratory (GI)SAXS Diffractometer

25 Mar 2020 09:15
25 Mar 2020 10:45
building 04.6, room 034-036

Emmanuel Kentzinger, Ulrich Rücker
(Quantum Materials and Collective Phenomena)

GALAXI (Gallium Anode Low-Angle X-ray Instrument) is a small X-ray diffractometer which has been optimized to be able to perform small angle X-ray scattering experiments at grazing incidence (GISAXS). GALAXI can investigate structures in the size range of D = 2*pi/Q = 2 ... 100 nm, even if they are deposited on a substrate which is intransparent for X-rays. GALAXI makes use of Bruker AXS' Metaljet X-ray source which is the laboratory X-ray source with the highest brilliance available today. A dedicated parabolic optics directs the X-ray beam through the 4 m long collimation. The sample can be oriented in the beam using 2 translation and 2 rotation degrees of freedom. As small angle detector we use a Dectris Pilatus 1M detector that makes it possible to obtain scattering patterns with 6 orders of magnitude signal/noise ratio due to its impressively low background level. Detector distance can be adjusted between ca. 90 cm and 360 cm to adapt the angular range and resolution to the experimental requirements. The beam path is evacuated from the source up to the detector, also the samples are located in vacuum. GALAXI is used to investigate e.g.: structure of self-organized nanoparticle assemblies, size distribution of nanoparticles in solution, structure of liquid crystals, density profile of thin films. In this lab visit, we propose to measure GISAXS from Bit Patterned Media.

Online registration is mandatory and all places are subject to availability; you will receive an email confirmation once your place on the seminar is reserved. This lab visit will be offered twice, from 09:15am-10:45am, and from 11:00am to 12:30pm. When you register, please pay attention to the starting time.

This Labs! event is offered in collaboration with the IFF Spring School.