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. 2025 Aug 22;11(34):eadw6673. doi: 10.1126/sciadv.adw6673

Table 1. Specifications of the tricolor monochromated x-ray source μFOCUS 450.

Each row represents an anode material, and the columns indicate the spot size, flux and x-ray linewidth.

Anode material Excitation energy (eV) Spot size (μm) Flux (photons/s), 250-μm spot X-ray linewidth (FWHM) (meV)
Al 1487 100 to 1000 4.1 × 1010 220
Ag 2984 100 to 1000 1.2 × 109 450
Cr 5414 200 to 1000 4.5 × 109 500