Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8208760 | Applied Radiation and Isotopes | 2018 | 9 Pages |
Abstract
The results of systematic evaluations of the spectrum-averaged cross section measurements performed in the spontaneous fission 252Cf neutron field are presented. The Following threshold reactions were investigated: 23Na(n,2n)22Na, 54Fe(n,p)54Mn, 54Fe(n,α) 51Cr, 27Al(n,p)27Mg, 27Al(n,α)24Na, 19F(n,2n)18F, 90Zr(n,2n)89Zr and 89Y(n,2n)88Y. The spectrum-averaged cross sections for 23Na(n,2n)22Na, 54Fe(n,α)51Cr and 89Y(n,2n)88Y reactions were measured for the first time. This quantity is compared with calculations carried with the IRDFF-v1.05 library. There is a notable disagreement exceeding uncertainties only for 54Fe(n,p)54Mn and 54Fe(n,α) 51Cr reactions. The spectrum-averaged cross sections were inferred from experimentally determined reaction rates. The experimental reaction rates were derived for irradiated samples from the Net Peak Areas measured using the semiconductor high purity germanium spectroscopy. The presented experimental data can be used to validate nuclear data libraries and reactions used in the practical reactor dosimetry and to specify high energy tail of the 252Cf neutron spectrum.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Martin Schulc, Michal KoÅ¡Å¥ál, Stanislav Simakov, VojtÄch Rypar, Davit Harutyunyan, Jan Å imon, Nicola Burianová, Evžen Novák, Bohumil Jánský, Martin MareÄek, Jan UhlÃÅ,