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Virtual tour

D10 - Four-circle diffractometer with three-axis energy analysis

D10 - Single-crystal four-circle diffractometer with three-axis energy analysis

D10+ is unique in being the only four-circle diffractometer with optional energy analysis as on three-axis spectrometers. It also possesses a unique four circle dilution cryostat for temperatures down to 0.1K, and offers high reciprocal-space resolution and low intrinsic background, to medium real-space resolution.

D10+ is a fully renewed and upgraded single crystal diffractometer delivering gains of approximately one order of magnitude compared to D10 due to the rebuilt and modernised H24 guide, dedicated end-of-guide position, optimised monochromators and new detector.

The upgrade includes the primary as well the secondary spectrometers with new bidimensional detector. It will be equipped also with a new analyser axis with continuous change of the incident wavelength. 

Applications

Conventional crystallography

  • Magnetic crystal structures
  • Modulated structures
  • Phase transitions, phase diagrams
  • Diffraction at extremely high or low temperatures, under pressure, or in high magnetic fields
  • Diffuse scattering
  • Quasi-elastic scattering
  • Crystalline thin films and multilayers
  • Inelastic scattering in four-circle geometry

Instrument layout

This layout regroups several of the options of D10 (eulerian cradle, analyser, flat-cone detector) while they are not used all at the same time. The advanced He-3 cryostat is not shown except for the air cushion platform for its liquid He-4 Dewar.

General view of the instrument

Here D10 is in its 2-circle configuration with energy analysis. This is used either for highly accurate intensity measurements and/or in the case of sample environments forbidding the use of an Eulerian Cradle.

The 4-circle setup with the advanced 3He dilution cryostat

This cryostat, the only one of its kind in the world as of 2009, can reach 65 mK. Its operation mode is independent of gravityation, which makes it possible to follow the complex rotations of a 4-circle diffractometer. The technique used is similar to the one used on cryostats shipped on stratospherical high-altitude balloons and satellites.