Preparation of osmium targets with carbon backing
Résumé
For nuclear reaction studies, thin metallic osmium targets, either natural or isotopically enriched (Os-192) of 200-300 \u03bcg/cm2 thicknesses deposited on a thin carbon backing are required. A challenging method was successfully performed at GANIL involving firstly the preparation of an aqueous solution of osmium tetrachloride, then its electro- deposition onto a thick copper backing (100 \u03bcm); this process was followed by the evaporation of a thin carbon layer (40 \u03bcg/cm2) and finally the dissolution of the copper material.