Electrodeposition of 106Ru and 241Am and derived information on preparing sealed radiation sources

The application of electrochemical plating method for the deposition of electropositive Ru and electronegative Am was examined. These investigations were aimed on the preparation of sealed radiation sources of 106Ru used in treatment of intraocular tumours, and 241Am used for ionization purposes. The composition of galvanic baths and process parameters influencing the quality and stability of ruthenium deposites and americium with gold co-deposites were determined. The effect of ageing of the electrolyte on the rate of 241Am co-deposition was investigated. From the results obtained it follows that the ageing favours the formation of species affecting the transport of americium towards the cathode. The method of sealing of the sources by means of galvanic deposition of metallic protective layers is described. The galvanic plating technique enables manufacturing of sealed radiation sources of 106Ru and 241Am. (author)