On 54Fe neutron cross section importance in iron

Martin Schulc; Michal Košťál; Davit Harutyunyan; Petr Baroň; Evžen Novák

doi:10.1016/j.apradiso.2017.06.025

On ⁵⁴Fe neutron cross section importance in iron

Appl Radiat Isot. 2017 Oct:128:86-91. doi: 10.1016/j.apradiso.2017.06.025. Epub 2017 Jun 20.

Authors

Martin Schulc¹, Michal Košťál², Davit Harutyunyan², Petr Baroň², Evžen Novák²

Affiliations

¹ Research Centre Rez, Hlavní 130, Husinec-Řež 250 68, Czech Republic. Electronic address: martin.schulc@cvrez.cz.
² Research Centre Rez, Hlavní 130, Husinec-Řež 250 68, Czech Republic.

PMID: 28688250
DOI: 10.1016/j.apradiso.2017.06.025

Abstract

The presented paper aims to evaluate the importance of ⁵⁴Fe XS in iron by means of measuring the reaction rates of the selected reactions on ⁵⁴Fe and measuring a fast neutron leakage spectra from the iron sphere of 100cm in diameter by a stilbene scintillation detector with subsequent XS sensitivity analysis. The reactions involved in the study were ⁵⁴Fe(n,p) and ⁵⁴Fe(n,α). Measured neutron induced reaction rates in ⁵⁴Fe are compared with calculated ones in different nuclear data libraries. We show that there are notable discrepancies in ⁵⁴Fe(n,α) reaction. The results of the leakage spectra differ significantly in various libraries, library ENDF/B-VII.1 in region 3.5-7.0MeV gives relatively good agreement. CIELO library underestimates the result; however JEFF-3.2 overestimates results., ²⁵²Cf with the emission rate of 9.53E8 n/s was used as a neutron source for all experiments involved.

Keywords: (252)Cf; (54)Fe; Cross section; Iron.