Fig. 1: XRF elemental mapping of microparticles collected from Unit 2 of the FDNPS.
From: Synchrotron radiation analysis of microparticles from the Fukushima Daiichi nuclear power station

a–c Maps of U Lα, Pu Lα, and Zr Kα emission lines for particles A1 and A2. d–f Corresponding elemental maps for particle B. g–i Corresponding elemental maps for particle C. j XRF spectra of particles A1, A2, B, and C. The spectra are normalized to the peak intensity of the U Lα emission line in each spectrum.