This paper presents results of a study of spatial distributions of neutron radiative capture and natU fission in the target assembly «Quinta» with a mass of 512 kg of natural metallic uranium irradiated by deuteron beams from the accelerator Nuclotron in the energy range from 1 to 8 GeV with the total number of deuterons on the target ∼ 10^13 at each energy. From these data the total numbers of fission reactions in the entire volume of the uranium target, and the corresponding total numbers of produced 239Pu nuclei were obtained. It was found that the total numbers of fission Nf and numbers NPu of accumulated 239Pu nuclei normalized to one incident deuteron and 1 GeV of its energy remain constant within experimental error in the studied incident energy range. The values Nf do not change from adding a lead blanket to the target assembly «Quinta», and the values NPu increase by about 55%. Analysis of the spatial distributions of neutron radiative capture to fission ratios (spectral indices), the accuracy of which is substantially higher than the rest of the studied observables (due to the absence of systematic errors of monitoring of deuteron numbers on the target), indicates softening of the neutron spectrum at offset from the axis to the periphery of the uranium target. The degree of this softening increases when adding a lead blanket to the target assembly.