Speaker
Summary
The Spark Plasma Sintering (SPS) technique enables the fabrication of solid, coin-shaped targets using natural yttrium foils of varying thicknesses. Each target consists of a niobium (Nb) backing disk and an yttrium foil bonded together. The yttrium foil thickness can be tailored according to the solid target holder design and specific production requirements.
Based on the operational parameters of the TR-19 cyclotron installed at IRCCS Sacro Cuore Hospital, yttrium foils with thicknesses ranging from 150 to 250 µm were used to produce yttrium targets via the SPS process in a dedicated system developed and installed at the INFN laboratories. These targets were subsequently irradiated with 13 MeV protons at a beam current of 50 µA for varying irradiation times to assess their thermomechanical resistance and to determine the corresponding saturation activity, radionuclidic purity, and radiochemical purity after radiochemical separations.
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