Table 2. Details of the beamline optics.

The beam size is given as full width at half-maximum value. The flux value is based on the measurement shown in Fig. 5 ▸ and as discussed in the text. The flux in the cell is an approximation and depends on many factors such as the window material on the cell.

Beamline name	SPECIES
Source	EPU61
Mirrors	Au-coated
Monochromator	cPGM
Energy range (eV)	30–1500
Wavelength range (Å)	413–8.3
Beam size (µm)
RIXS	5 × 25
APXPS	100 × 100
Flux (photons s−1)	5 × 1013 to 1 × 1010
in AP cell (approximately)	3 × 1013 to 5 × 109