Regensburg 2013 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 18: Poster: Polymer Dynamics
CPP 18.19: Poster
Dienstag, 12. März 2013, 18:15–20:15, Poster C
The Jülich Neutron Spin Echo Spectrometer: Dynamics with Depth Resolution — •Oxana Ivanova1, Olaf Holderer1, and Michael Monkenbusch2 — 1Jülich Centre for Neutron Science, Forschungszentrum Jülich, Aussenstelle am FRM II, Garching — 2Jülich Centre for Neutron Science, Forschungszentrum Jülich, Jülich, Germany
Neutron spin-echo (NSE) spectroscopy is a neutron scattering technique with the highest energy resolution. It enables investigation of very slow dynamic processes and via scattering vector gives access to the spatial information. The accessible time and length scales are relevant for observation of thermal fluctuations in mesoscopic systems. High energy resolution, low background and good instrumental stability of J-NSE spectrometer at FRM II research reactor in Garching enables the use of grazing incidence technique (GINSES). Along with conventional NSE spectroscopy, GINSES is developed to be used as 'push-buttom' option to resolve depth dependent near surface dynamics. Scientific applications of J-NSE instrument include dynamics of classical and critical microemulsions, microgels, polymer blends, polymers in solution and different confinement, membranes and so on. Some examples of recent experiments will be presented.