Radiation hardness of Mo60Re40 superconducting thin films

Transport properties mesurements on Mo 60 Re 40 superconducting thin films exposed to an α particles beam are reported, in order to study their radiation hardness. The Mo 60 Re 40 compound has in fact interesting properties for its application as coating of resonant cavities for particle acceleration. The data show a much smaller degradation of superconducting properties of Mo 60 Re 40 (namely the transition temperature and the critical current) than other A 15 materials. The results obtained are discussed and compared with previous measurements performed on the stoichiometric A15 Mo 75 Re 25 compound.