Figure 5
From: The nature of Pu-bearing particles from the Maralinga nuclear testing site, Australia
FIB-SEM EDX characterization of CeresIII. (a,b) FIB-SEM EDX line scans of selected areas within CeresIII. (c) SEM image of FIB cross-section of the particle. (d) Overview of the particle mounted on kapton micromount. (e–l) Represent false colour EDS element maps for each respective element. This particle is predominantly metallic Pb, with some Fe and traces of Pu–U in the center; there are also a couple of Pu–U–C particles (at sites labelled ‘a’ and ‘b’, line 2). There is a rim of Pb–O, which contains a particle comprised of Pu–U–O (arrow and site ‘c’, line 3) and an outer rim containing Ca–C–O (most likely calcite, CaCO3) and Si (most likely a silica polymorph). Imaging and EDS analyses performed at 20 keV acceleration voltage.
