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Measurements of neutron scattering angular distributions with a new scintillator setup

Pirovano, E.; Beyer, R.; Junghans, A. R.; Nolte, R.; Nyman, M.; Plompen, A.

A new experimental setup for the measurement of neutron scattering cross sections and angular distributions is currently being developed at the neutron time-of-flight facility GELINA, at the JRC-Geel. Up to 32 liquid organic scintillators are employed for the detection of neutrons scattered from a sample of the investigated material. The differential cross section is measured at eight different angles, and the angleintegrated cross section is obtained from the differential data by numerical integration. Two experiments for the study of scattering on iron were carried out, one at GELINA and the other at nELBE (HZDR). The first results for the angular distributions of elastic scattering in the neutron energy range from 2 to 6MeV are here presented and compared with evaluations from the major nuclear data libraries.

Keywords: nELBE; GELINA; neutron; angular distribution

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