Inelastic scattering of fast neutrons from ⁵⁶Fe

¹ Helmholtz-Zentrum Dresden - Rossendorf, 01328 Dresden, Germany
² Technische Universität Dresden, 01062 Dresden, Germany

^a e-mail: roland.beyer@hzdr.de
^b Present address: AREVA NP GmbH, 91052 Erlangen, Germany
^c Present address: MLUL - Land Brandenburg, 14467 Potsdam, Germany
^d Present address: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
^e Present address: IBA Proton Therapy, 45157 Essen, Germany

Published online: 13 September 2017

Abstract

The inelastic scattering of fast neutrons on ⁵⁶Fe was investigated in different manners at the neutron time-of-flight facility nELBE. The scattering cross section was determined via the measurement of the γ-ray production and by means of a kinematically complete double time-of-flight method. In a further measurement the γ-ray angular distribution was determined to correct the measured cross sections for anisotropy. The resulting inelastic scattering cross section determined from the photo production cross sections is in very good agreement with evaluations and previous measurements. In contrast, the result of the double time-of-flight measurement is about 10% lower than these data, giving a hint to neutron-γ-ray angular correlations in the process of inelastic neutron scattering.