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Measurement Techniques for Warhead Authentication with Attributes: Advantages and Limitations

A survey of different measurement techniques applicable in the context of the attribute approach for warhead authentication is presented to demonstrate current capabilities and gaps. Therefore, their technical advantages and limitations will be assessed, in particular in terms of correctly characterizing an item whose configuration is not entirely known to an inspecting party. Passive and active neutron and gamma measurements assessing the presence of fissile material, isotopic composition and fissile mass of plutonium and uranium are considered.