Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 11: Emerging Topics in Chemical and Polymer Physics, New Instruments and Methods

CPP 11.2: Vortrag

Montag, 1. April 2019, 15:15–15:30, H8

Development of a Sample Environment for in-situ Dynamic Light Scattering in Combination with Small Angle Neutron Scattering for the Investigation of Soft Matter at the European Spallation Source ESS — •Andreas Schmid1, Sebastian Jaksch2, Henrich Frielinghaus2, Tobias Schrader2, Harald Schneider3, and Thomas Hellweg11Physical and Biophysical Chemistry, Bielefeld University, Bielefeld, Germany — 2Jülich Centre for Neutron Science JCNS, Forschungszentrum Jülich GmbH, Outstation at MLZ, Garching, Germany — 3Scientific Activities Division, FLUCO Platform, European Spallation Source ERIC, Lund, Sweden

The most brilliant and most powerful neutron source in the world, the European Spallation Source ESS, is currently built in Lund. In our project FlexiProb we developed three sample environments for the investigation of soft matter to maximize the potential of the ESS with regard to the very high neutron flux. These are sample environments for small angle neutron scattering (SANS) with in-situ dynamic light scattering (DLS), under gracing incidence (GISANS) and on free-standing liquid films and foams. All sample environments are built on an universal carrier system to ensure a high repeatability and flexibility as well as a minimum switching time between different sample environments. The DLS/SANS module developed in our subproject provides additional control parameters, e.g., the sample stability during the SANS measurements. We developed a special sample holder for about 40 samples which allows the simultaneous measurement of SANS and DLS at two different scattering angles and a precise temperature control.

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