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Online analyzers: Cf-252 supply chain update and risk mitigation

Several hundred cement producers use online bulk material analyzers to help improve their quality control and plant efficiency. The predominant technology used for online analysis is Prompt Gamma Neutron Activation Analysis which requires a source of neutrons to function. This paper reviews the long-term availability of neutrons from the isotope californium 252 (Cf-252) as well as from an alternate source of neutrons produced electrically from a small linear accelerator otherwise known as a neutron generator.