Abstract
A new analytical technique for determining actinides in molten salts is proposed, which combines information from electrodeposition with the output of an alpha particle detector. This technique requires a thin actinide layer to be deposited on metal substrate. Electrodeposition of a thin thorium layer from molten LiCl-KCl onto stainless steel and nickel plates is reported in this paper using chronoamperometry, chronopotentiometry, and repeating chronoamperometry. Repeating chronoamperometry was demonstrated as the most effective method for depositing approximately a 1 μm thick thorium metal layer on substrates. The effect of thorium concentration on deposition time was also determined. Re-usability of the detectors was shown via demonstrating the anodic stripping of the deposit verified by surface analysis (SEM-EDS).
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