Berlin 2005 – wissenschaftliches Programm

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VA: Vakuumphysik und Vakuumtechnik

VA 2: Quanten, Neutronen und Positronen

VA 2.4: Vortrag

Montag, 7. März 2005, 12:00–12:20, TU E20

The Materials Science Reflectometer MatSci-R at FRM-II — •Rühm Adrian — MPI für Metallforschung, Stuttgart

The Max Planck Society is operating a neutron reflectometer for Materials Science at the new research reactor FRM-II in Garching. The horizontal standard geometry of the instrument makes it suitable for reflectometry and grazing incidence scattering studies of free liquid surfaces. The reflectometer can be used for polarized neutron reflectometry and off-specular scattering to investigate magnetic materials, e.g. magnetic multilayers. The instrument will make intense use of the novel spin-echo resolved grazing incidence scattering (SERGIS) technique for the study of off-specular scattering. This technique exploits the neutron spin to obtain high q-resolution without collimation of the incident beam, thus making it possible to explore q-ranges which would otherwise be too weak in scattering intensity to be studied. As a special novel feature the neutron reflectometer also provides a so far unique add-on X-ray reflectometer which allows to routinely conduct in-situ neutron/X-ray contrast studies.