Regensburg 2007 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 7: POSTER: INTERNAL SYMPOSIUM Scattering Experiments
CPP 7.25: Poster
Montag, 26. März 2007, 16:00–18:00, Poster B
The new Jülich Neutron Spin Echo Spectrometer J-NSE at the FRM-II — •Olaf Holderer1,2, Michael Monkenbusch1,2, Reinhard Schätzler1,2, and Dieter Richter1,2 — 1Jülich Centre for Neutron Science (JCNS), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany — 2Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
Neutron spin echo (NSE) spectroscopy is a well-suited method for studying the dynamics of soft matter systems such as glasses, polymers and complex liquids and paramagnetic properties of e.g. spin glasses. The Jülich NSE spectrometer has been in operation at the Jülich research reactor FRJ-2 since 1996. It has been transferred now to the new research reactor FRM-II of the TU München, where it is in the comissioning phase and will continue with user service this year. The J-NSE will operate at an neutron guide end position, giving access to the wavelength band of about 4.5 to 16 Å. New correction coils have been designed and manufactured, allowing to use higher currents in the main precession coils.
A larger neutron guide exit of 60x60 mm, the higher neutron flux and the better correction elements push the performance of the instrument to fouriertimes λ=1 ps to about 350 ns, with a q-range of q=0.02 - 1.5 1/Å.