Figure 1
From: The effect of oxygen concentration on the speciation of laser ablated uranium
Schematic of the ablation chamber and configurations with in-situ infrared (top) and Raman (bottom) spectroscopies. Shown is a 2.75″ CF 6-way cube with two KBr window flanges and one gas inlet flange. The chamber also consists of one sapphire window flange (for the laser pulse), one translation arm flange (to hold the uranium target), and one blank flange (as a supporting base) not shown for clarity. The total length is ~ 6 inches along the IR beam axis. Particulates formed during the ablation process are collected on a KBr substrate positioned close to the ablation plume. Infrared light, guided by gold-coated focusing mirrors, makes multiple passes through the substrate to obtain an IR absorption spectrum. Tilting the chamber moves the KBr substrate towards the external window allowing for in-situ Raman spectra to be measured.
