A severe supply crisis of99Mo, precursor of99mTc a diagnostic radionuclide largely used in Nuclear Medicine, occurred in 2008–2009 due to repeated shut-down of the two main (aged) fission reactors. An alternative route for producing99Mo by100Mo(n,2n)99Mo reaction was investigated at ENEA. The experiment, designed according to Monte Carlo simulations performed with the Fluka code, produced99Mo by irradiating a natural Molybdenum powdered target with 14 MeV neutrons produced at the Frascati Neutron Generator. The99Mo specific activity was measured at metrological level by γ-ray spectrometry.
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