Characterization of thin targets for the NUMEN Experiment.
Capirossi V., Calvo D., Delaunay F., Fisichella M., Iazzi F., Pinna F.
VI - Fisica applicata, acceleratori e beni culturali
GSSI Ex ISEF - Aula A - Venerdì 27 h 09:00 - 12:00
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The NUMEN Experiment, at INFN-LNS, measures the Double Charge Exchange reactions cross-sections to get information on the Nuclear Matrix Elements of the Neutrinoless Double Beta Decay. Among other requirements, NUMEN targets must be thin (few hundreds of nm) and uniform, to preserve the products energy resolution. First prototypes of targets deposited on a Highly Oriented Pyrolytic Graphite substrate have been produced and characterized. The surface non-uniformity has been qualitatively studied by Field Emission Scanning Microscopy. Alpha-transmission spectroscopy has been used to study both thickness and uniformity; thickness evaluations have been confirmed by Rutherford Backscattering measurements. These results will be shown.