Principal Beamline Scientist:
Kejin Zhou
Tel: +44 (0) 1235 778296
E-mail: kejin.zhou@diamond.ac.uk
Email: sarnjeet.dhesi@diamond.ac.uk
Tel: +44 (0) 1235 778056
I21 is a dedicated Resonant Inelastic soft X-ray Scattering (RIXS) beamline that provides a highly monochromatised, focused and tunable X-ray beam onto materials, while detecting and energy-analysing scattered X-rays using a spatially-resolved two-dimensional detector. By studying the energy and momentum differences between the incident and the outgoing X-rays, one can obtain information such as the local lattice structure (local crystal field), electron orbitals (orbital excitations), collective lattice vibration (phonons), magnetic (spinons/magnons) and charge excitations of the material under investigation.
Source
| Insertion Device | 5 m helical undulator |
| Minimum magnet gap | 20 mm |
| Magnet period | 56 mm |
Beamline
| Energy range: | 250 - 1500 eV (to be upgraded to 3 keV in 2020) |
| Core energy range: | 250 - 1500 eV (LH) 450 - 1500 eV (LH and LV) |
| VLS gratings | VPG1 - 600 l/mm2 VPG2 - 1000 l/mm2 VPG3 - 2000 l/mm2 |
| Combined energy resolution at 930 eV | 100 meV (high flux mode) 60 meV (high resolution mode) 35 meV (ultra-high resolution mode) |
| Beam size at sample with full flux | 40 (H) x 2.5 (V) µm2 |
Sample environment
| Sample volume | 10 (L) x 10 (W) x 5 (H) mm3 |
| Sample type | solid |
| Temperature range: | 10 - 300 K |
| Manipulator | 6 DOF |
| cleaving | In-vaccum RT cleaving |
Spectrometer
| Spectrometer length | 10320 - 15520 mm |
| Spectrometer height | 2315 - 3725 mm |
| Energy range | 250 - 930 eV (SVLS1) 450 - 1500 eV (SVLS2) |
| VLS gratings | SVLS1 - 1500 l/mm2 SVLS2 - 2700 l/mm2 |
| Detector | CCD, pixel size: 13.5 x 13.5 µm2 |
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Magnetic Materials
Macromolecular
Soft Condensed 
Imaging and
Biological
Magnetic
Structures and
Crystallography 
Spectroscopy