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Differential Neutron Spectra Unfolding from Foil Activation Data

This report describes an application of a computer code, IUNFLD, to estimate a differential neutron fluence spectrum based on a set of foil activation data. The code allows several types of supplementary data to be used along with the activation data. The estimate obtained is compared with transport calculations and with estimates obtained with other codes. The advantages of IUNFLD compared with the codes used previously are discussed.