The development of a XEOL and TR XEOL detection system for the I18 microfocus beamline Diamond light source

We describe the design and capabilities of a new Continuous Wave X-ray Excited Optical Luminescence (CW-XEOL) and Time Resolved X-ray Excited Optical Luminescence (TR-XEOL) facility on the I18 beamline at the DIAMOND light source, the UK national synchrotron facility. Experimental data from a suite of framework silicates are presented to illustrate the capabilities of the system. Experiments studied include simple (CW-XEOL) spectroscopy, (TR XEOL) lifetime experiments dose and dose rate dependence (CW-XEOL) experiments, spatial (TR XEOL) on heterogeneous sample, wavelength resolved (TR XEOL), Optically Derived X-ray Absorption Spectroscopy, (OD XAS). ► We describe the capabilities of a new CW-XEOL and TR-XEOL detection system for a hard X-ray beamline. ► We model TR XEOL with luminescence lifetimes from ∼25ps to ∼400ps from framework silicates. ► CW XEOL, 200–900nm with a resolution of ∼0.9nm is used to complete dose and dose rate experiments. ► Micro-beam high spatial resolution XEOL within X-ray excitation energies 2–20keV.