Advanced 2D XRF imaging of uranium oxidation states using HERFD at the U M4 edge

Abstract

Uranium is found in various types of rocks. HERFD-XRF imaging at the U M4 edge is a novel non-destructive technique that visualizes the distribution of U(iv), (v), and (vi) oxidation states at concentration levels ranging from ppm to wt%, offering unprecedented insights into uranium habitat and valence.