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A general view of the instrument Proud Jacques Ollivier standing on the walkway giving access to the sample position. Photo taken from above FIGARO and looking to the end of the guide hall.

A general view of the instrument D17 is an extremely powerful vertical axis (polarised) reflectometer with a high flux and low background capable of measuring reflectivities down to 10 -7 . It is designed

energy transfer). A velocity selector selects a rather broad Δλ/λ bandwidth (typically 15%) from the incident polychromatic neutron beam. The monochromatic beam is then polarised by a supermirror polariser ... of the spin of the neutron in a magnetic field as un extremely accurate stopwatch. Counting the number of precessions made by the neutron ...

A general view of the instrument

A simulated experiment The incoming polychromatic neutron beam (wavelength around 2.2 Å) is backscattered on the monochromator (Bragg reflexion on a crystal lattice) with a high monochromaticity (energy ... beam is reflected so as to hit the sample. The scattered neutrons are analysed by a Bragg reflexion on the analysers. A chopper creates ...

A general view of IN12 The IN12 instrument - On the left: End of guide shielding with lead tunnel, movable polyethylen shielding of the monochromator castle (blue) as well as the lead exit tunnel (yellow)

A simulated experiment Basics of the so called time-focussing technique Three intense neutron beams are extracted from a neutron guide by an assembly of three monochromators and are focused horizontally ... sample. Each monochromator delivers a beam of distinct energy and, thus, of distinct velocity due to different Bragg-scattering conditions. The ...

studied on a depth of 1 to 300 nm (5 to 1500 atomic layers). If the incident angle is lower than the critical angle, the material acts like a mirror and reflects all neutrons. If it is wider, only a part of ... reflected. Measuring the proportion of reflected neutrons for a reflection angle equal to the incident angle makes it possible to explore ...

A general view of the instrument D23 is shown with the 12 Tesla cryomagnet mounted on.

higher, only a part of the neutrons are reflected. Measuring the proportion of reflected neutrons for a reflection angle equal to the incident angle makes it possible to explore the sample in a direction ... Layer stacking can be studied on a thickness scale of 1 to 500 nm (5 to 2500 atomic layers). If the incident angle is lower than the critical ...