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The amount of plutonium in gram-sized samples, measured in terms of a (240)Pu(effective) mass, m(240eff), is commonly determined using neutron coincidence counting (NCC) in which further knowledge of the plutonium isotopic composition allows conversion of the (240)Pu(effective) mass to an absolute plutonium mass. Neutron transport calculations form an essential element in the interpretation of the measurement results. The magnitude of the sensitivity of the results to uncertainties in the various basic input parameters, as well as the final achievable measurement accuracy, have been modelled by Monte-Carlo simulation.

Additional information

Authors: VAN BELLE P, EC-JRC, Institute for Transuranium Elements (ITU), Karlsruhe (DE);OTTMAR H, EC-JRC, Institute for Transuranium Elements (ITU), Karlsruhe (DE)
Bibliographic Reference: An oral report given at: 23rd. ESARDA Annual Meeting of Safeguards and Nuclear Material Management. Held at: Bruges, (BE) 8-10 May (2001)
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