Abstract
The simultaneous determination of the isotopic vector and mass fraction from a single gamma/X-ray spectrum would represent an important step forward allowing the determination of the mass of both uranium and plutonium bearing materials more easily, reliably and accurately than existing NDA methods. The availability of a complete NDA assay on site would strongly reduce the necessity for shipment and further expensive analyses of samples, improve the timeliness of measurements and reduce the cost of Safeguards sample analyses. The paper describes a modular programming approach aiming at the implementation of a software package holding all different gamma/X-ray and weighing (GXW) subprograms for analysis of special nuclear materials (liquid U, solid U, liquid Pu, solid Pu, MOX).
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