(n, γ)-Cross-section measurements of 99Tc, Eu, Sm and Fe in the energy range 1 eV to 50 keV with a slowing-down time spectrometer

Absolute (n, γ)-cross-sections of some fission products with high yield have been measured. In addition, Fe has been studied to remove some unexplained discrepancies in earlier cross-section measurements. Both, the γ- and the neutron-detector have been calibrated absolutely, so the values derived here had not to be normalized to some other n, γ-cross-sections but rely on the 1/v-dependence of the ¹⁰B(n, α) ⁷Li- and the thermal Au-cross-section only.