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neutron polarization vector at will, before and after the sample. In the first video the scattered beam polarization vector is antiparrallel to the input polarization which means that the polarization rotates ... which is true for collinear antiferromagnetic samples. Other kinds of magnetic samples modifies the beam polarization in a much complex ...

a rather broad Δλ/λ bandwidth (typically 15%) from the incident polychromatic neutron beam. The monochromatic beam is then polarised by a supermirror polariser which stops the neutrons with the "wrong"

bottle filled up with that polarised gas would be an effective neutron polariser even for large white beams. This technique was made trully operational for the 1st time in November 1996 by the historical experiment ... He spin-filter on D3. F. Tasset is looking at the ratemeter to get a first estimate of the neutron-beam polarisation. (movie ...

to the PERKEO III spectrometer developed at Heidelberg University, the use of a pulsed cold neutron beam with high intensity at the instrument PF1B , and the continuous improvements of tools for neutron ... Munich and Vienna. The result was obtained in a blind analysis, where the experimental asymmetry, the beam polarization and a leading ...

Reactor hall, thermal beam IH3 Monochromator Double focusing – horizontal variable focusing. Incident beam area at the monochromator: 6 x 6 cm2. Monochromator surface: 20.8 x 8.6 cm2 20 crystals in a 4 ... 2 , out: 67x67 mm 2 ) Choppers Background chopper Fermi chopper 5000 rpm max 15000 rpm max Sample Beam area at the sample depending on the ...

(DECPOL). This makes it possible to monitor separately the polarisations of the incident and scattered beams, in 3 dimensions.

neutron source (HCS) of the ILL and optimized neutron optics Clean beam (velocity selector etc) and very low background Flexible choice of beam conditions (different monochromators, analyzers, guides) Routine

neutron source (HCS) of the ILL and optimized neutron optics Clean beam (velocity selector etc) and very low background Flexible choice of beam conditions (different monochromators, analyzers, guides) Routine

polarising guide H511 Neutron beam characteristics diameter at sample position 40 mm incident wavelength 6 ... 25 Å monochromatisation Δλ/λ (FWHM) 15% (velocity selector) incident beam divergence <17 mrad polariser

helimagnets require more than the conventional neutron spin echo set-up (NSE). Indeed, the neutron beam polarisation is not necessarily flipped upon scattering. When the magnetic interaction vector is complex ... position. A solid-state polariser was added after the first Larmor precession region to repolarise the beam. This is necessary for ...