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 gamma-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 surrounded by a setup of 7 LaBr3 scintillation detectors and 7 high-purity germanium detectors to detect the de-excitation gamma-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 previous measurements but clearly deviate from recent data taken at the GELINA facility.
BEYER R.;
FROTSCHER Axel;
JUNGHANS A. R.;
NYMAN Markus;
PLOMPEN Arjan;
GRIEGER Marcel;
KÖGLER T.;
LUDWIG F;
REINICKE S.;
SCHULZ S.;
SCHWENGNER R.;
TRINH T.;
URLASS S.;
WAGNER A.;
2020-11-24
EDP Sciences
JRC117650
2100 014X (online),
https://publications.jrc.ec.europa.eu/repository/handle/JRC117650,
10.1051/epjconf/202023901029 (online),
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