Absorption cell with fiber optics for concentration measurements in a flowing gas stream

To facilitate the connection of the fiber optics to the experimental apparatus, the optical system was kept simple. Delicate alignments were avoided since the apparatus was contained in a glovebox and access to the monitor cells was limited. Changing the analysis site from one monitor cell to another was a trivial operation, allowing a single light source and detector assembly to service all experimental configurations. The in-line absorption cell was utilized to study the preparation of uranium and plutonium hexafluorides in a flowing system