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i = 2.66 Å -1 and 4.1 Å -1 are 0.82(3) meV and 3.05 (15) meV, respectively. Polarisation analysis can be performed in combination with the standard ILL 2.5 T and 6 T vertical-field and 4 T horizontal-field ... Gauss), which automatically follows the direction changes of the scattering vector. This coil set can receive the standard ILL cryostats and ...

energy resolution by diffraction of gamma rays from perfect crystals, according to Bragg’s law. Both can operate with flat, nearly perfect Si or Ge crystals. In addition, a doubly bent crystal mode for GAMS5 ... interferometers. For this purpose the spectrometer crystals are mounted on interferometer arms. These can be rotated using a combined step ...

µs) to the sample. The time-of-flight of neutrons between the chopper and the sample (1 ... 5 ms) can be measured by using precise electronic circuitry. Secondary spectrometer The sample environment is ... obtain the scattering function S(Q,w) that is characteristic of the properties of the sample. One can extract from it the complete information ...

and Cu(111) with variable curvature allows vertical focussing. The IN3 pyrolytic graphite analyser can be curved horizontally, but also additional TAS analysers and instrumental options are regularly used

wavevector transfer values Qel as low as 0.03 Å -1 at 20 meV incident energy can be reached. The position of the two-dimensional detector can be adjusted to cover different small-angle ranges between 1° and 15° ... 300-1900 K furnace A ~2 m2-area position sensitive gas detector ( 3 He) whose distance from the sample can be varied between 2 and 6 m ...

monochromator is most useful at low take-off angles where relatively long wavelength ( »2.5-3.8Å) can be produced providing the incident flux on the sample »2´107 n´s-1´cm-2. Higher λ/2 harmonics are filtered ... sample size and instrument operation mode (powder, single crystal), the illuminated sample volume can be varied from a few cm3 to a few ...

r, using Bragg reflection in first (002), second (004), and third (006) order. The take-off angle can be varied between 36 and 59 degrees. A double focusing copper monochromator using the (220) and (331) ... rows and 15 columns of crystals of dimension 20 by 20 mm. Both the horizontal and vertical focusing can be varied, in order to maximize the ...

standard focusing conditions the momentum resolution δ|Q| is about δ|Q| ≈ 0.02 Å-1. If needed, δ|Q| can be considerably enhanced by beam collimation with compromises in neutron flux. Sample environment ThALES ... polarized and analyzed with large focusing Heusler monochromators and analyzers. Polarization analysis can be done either with Helmholtz ...

ar data. With a maximum scattering angle of about 85° of the detector arm Q-values up to 2.1 Å -1 can be reached for complementary measurements probing small length scales. The flexibility of the instrument ... e the specific requirements for incident and outgoing resolutions. Specialised sample environment can be provided including a cryo-furnace ...

three different surfaces with crystal orientation [220], [111] and [113] respectively. The Bragg angle can be tuned from 27° to 55°. Typical usage: Interferometry The channel-cut monochromator offers a [220] ... double loop A typical interferogram at 30° Bragg angle is recorded in about 10 to 15 minutes. This time can increase considerably if the ...