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  • 1 Ghent University Institute for Nuclear Sciences Ghent (Belgium)
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The resonance integrals for 59 isotopes were determined by neutron activation in reactor Thetis. The irradiations were carried out with and without Cd cover. The ratios of the thermal to epithermal fluxes were calculated from the Cd ratio of a Au monitor. From the induced activities in 36 elements, measured by means of γ-spectrometry with Ge(Li) and NaI(Tl) detectors, the values of I0th were obtained.