Results of neutron-propagation experiments performed in iron-sodium mixtures using the source reactor HARMONIE and TAPIRO

The results of neutron-propagation experiments performed in iron-sodium mixtures, using the source reactor HARMONIE and TAPIRO are presented: with HARMONIE: five media were studied: pure sodium and pure iron, and mixtures of iron and sodium (30 V/o, 50 V/o, 70 V/o); with TAPIRO the presently available results concern a pure sodium medium; two types of results are given: first, the raw results; then, the correction factors for heterogeneity and leakage to convert the raw results into the ideal homogeneous and spherical model used in the calculations. Finally, a comparison is made between results obtained with HARMONIE and TAPIRO for the pure sodium; the aim of this comparison is to verify that the differences in geometry and source spectra are properly accounted for the calculations. (author)