Regensburg 2010 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 33: Poster II
MA 33.40: Poster
Freitag, 26. März 2010, 11:00–14:00, Poster B1
Polarized Neutron scattering on the triple-axis spectrometer PANDA: first results — •Enrico Faulhaber1, Astrid Schneidewind1, Fei Tang2, Peter Link3, Dirk Etzdorf3, and Michael Loewenhaupt2,1 — 1Gemeinsame Forschergruppe Helmholtz-Zentrum Berlin - Technische Universität Dresden, Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany — 2Institut für Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany — 3Forschungsneutronenquelle Heinz-Maier-Leibnitz (FRM II), D-85747 Garching, Germany
Typical applications of cold neutron triple-axis spectrometers comprise studies of spin and lattice dynamics, magnetic excitations and magnetic structures. In the past years, the PANDA spectrometer, located at the German research reactor FRM II, operated these fields in the conventional, unpolarized mode. To complement this normal mode of operation, a full polarization analysis of the neutrons was highly desired and, therefore, was recently implemented at PANDA.
First tests were made with neutron spins perpendicular to the scattering plane, utilizing static vertical guide fields between Heusler monochromator, spin flipper, sample and Heusler analyzer. Finally, an automated setup of split coils around the sample space was implemented, allowing for longitudinal polarization analysis in arbitrary configurations.
We will present recent results obtained by the completed set-up and discuss the status of the polarization analysis on PANDA in detail.