Neutron inelastic cross section measurements on 54 Fe

Adina Olacel (1) , Catalin Borcea (1) , Marian Boromiza (1) , Philippe Dessagne (2) , Gregoire Henning (2) , Maëlle Kerveno (2) , Luiz Leal (3) , Alexandru Negret (1) , Markus Nyman (4) , Arjan Plompen (4)

1 Horia Hulubei National Institute for Physics and Nuclear Engineering
2 DRS-IPHC - Département Recherches Subatomiques
3 IRSN - Institut de Radioprotection et de Sûreté Nucléaire
4 JRC - European Commission - Joint Research Centre [Geel]

A 54 Fe(n, n'γ) cross section measurement was performed at the Geel Electron LINear Accelerator of EC-JRC, Geel using the Gamma Array for Inelastic Neutron Scattering spectrometer and a 235 U fission chamber for flux normalization. The experimental results are presented in comparison with talys 1.9 default and tuned calculations. The tuned calculation, implying modifications of the optical model parameters, improved significantly the description of the experimental values and led to interesting conclusions regarding the interaction of the 54 Fe nucleus with neutrons. Since the results of these calculations were already presented extensively in a dedicated paper, the present article focuses on details related to the experimental particularities and data analysis procedure.

Domaines: Physique [physics]

Adina Olacel, Catalin Borcea, Marian Boromiza, Philippe Dessagne, Gregoire Henning, et al.. Neutron inelastic cross section measurements on 54 Fe. ND 2019: International Conference on Nuclear Data for Science and Technology, 2019, Pékin, China. pp.01010, ⟨10.1051/epjconf/202023901010⟩. ⟨hal-02957489⟩