https://doi.org/10.1051/epjconf/202023901029
Fast neutron inelastic scattering from 7Li
1 Helmholtz-Zentrum Dresden - Rossendorf, 01328 Dresden, Germany
2 Technische Universität Dresden, 01062 Dresden, Germany
3 European Commission, Joint Research Centre, 2440 Geel, Belgium
* e-mail: roland.beyer@hzdr.de
† Present address: Technische Universitat Darmstadt, 64277 Darmstadt, Germany
Published online: 30 September 2020
The inelastic scattering of fast neutrons from 7Li nuclei was investigated at the nELBE neutron-time-of-flight facility. The photon production cross section of 478 keV γ-rays from the first excited state of 7Li was determined by irradiating a disc of LiF with neutrons of energies ranging from 100 keV to about 10 MeV. The target position was surounded by a setup of 7 LaBr3 scintillation detectors and 7 high-purity germanium detectors to detect the de-excitation γ-rays. A 235U fission chamber was used to determine the incoming neutron flux. The number of detected photons was corrected for the detection efficiency, multiple scattering and the time-of-flight dependent data acquisition dead time. The preliminary results show reasonable agreement with some previous measurments but are about 15 % below the recent data taken at the GELINA facility.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
