Open AccessI21: an advanced high‐resolution resonant inelastic X‐ray scattering beamline at Diamond Light Source
Author(s) -
Zhou Ke-Jin,
Walters Andrew,
Garcia-Fernandez Mirian,
Rice Thomas,
Hand Matthew,
Nag Abhishek,
Li Jiemin,
Agrestini Stefano,
Garland Peter,
Wang Hongchang,
Alcock Simon,
Nistea Ioana,
Nutter Brian,
Rubies Nicholas,
Knap Giles,
Gaughran Martin,
Yuan Fajin,
Chang Peter,
Emmins John,
Howell George
Publication year - 2022
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577522000601
Subject(s) - beamline , spectrometer , physics , optics , synchrotron , scattering , photon , advanced photon source , resonant inelastic x ray scattering , photon energy , inelastic scattering , nuclear physics , inelastic neutron scattering , beam (structure)
The I21 beamline at Diamond Light Source is dedicated to advanced resonant inelastic X‐ray scattering (RIXS) for probing charge, orbital, spin and lattice excitations in materials across condensed matter physics, applied sciences and chemistry. Both the beamline and the RIXS spectrometer employ divergent variable‐line‐spacing gratings covering a broad energy range of 280–3000 eV. A combined energy resolution of ∼35 meV (16 meV) is readily achieved at 930 eV (530 eV) owing to the optimized optics and the mechanics. Considerable efforts have been paid to the design of the entire beamline, particularly the implementation of the collection mirrors, to maximize the X‐ray photon throughput. The continuous rotation of the spectrometer over 150° under ultra high vacuum and a cryogenic manipulator with six degrees of freedom allow accurate mappings of low‐energy excitations from solid state materials in momentum space. Most importantly, the facility features a unique combination of the high energy resolution and the high photon throughput vital for advanced RIXS applications. Together with its stability and user friendliness, I21 has become one of the most sought after RIXS beamlines in the world.