High precision neutron inelastic cross sections on16O

Boromiza Marian,Plompen Arjan,Nyman Markus,Henning Gregoire,Negret Alexandru,Dessagne Philippe,Olacel Adina,Borcea Catalin,Kervenoäelle Mäelle

doi:10.1051/epjconf/202023901013

Abstract

This work reports partial results of a (n, nγ) measurement on16O. Theγrays of interest from the inelastic channel were detected using the Gamma Array for Inelastic Neutron Scattering (GAINS) spectrometer at the Geel Electron Linear Accelerator (GELINA) neutron source. A very thick (32.30(4) mm) SiO2target was used. The main goal was to determine the angle-integrated γ-production cross section for the most important transitions. In this work we report the results for the main16O transition and we emphasize a consistency check aiming to ensure data reliability. Our results are compared with theoretical calculations performed using theTALYS1.8 code and with previously reported experimental data.

Highlights

In many countries nuclear reactors play an important role in energy production due to their evident advantages as compared with the standard options: limited pollution and in particular no carbon emissions, high energy density of the fuel and high reliability
The scientific community aims at developing a new type of nuclear reactor - Generation IV fast and thermal reactors - that will address many of these issues ( [1] and the references therein)
Using the Geel Electron Linear Accelerator (GELINA)-Gamma Array for Inelastic Neutron Scattering (GAINS) setup we measured the neutron inelastic cross section for the 6128.6-keV transition in 16O. It is reported with very good neutron energy resolution and very low uncertainty in the entire 6-20 MeV incident energy range

Summary

Introduction

In many countries nuclear reactors play an important role in energy production due to their evident advantages as compared with the standard options: limited pollution and in particular no carbon emissions, high energy density of the fuel and high reliability. The scientific community aims at developing a new type of nuclear reactor - Generation IV fast and thermal reactors - that will address many of these issues ( [1] and the references therein). These reactors are able to transmute the minor actinides from the fuel, shortening the time nuclear waste remains highly radioactive. They will be fuelled by more abundant isotopes (238U or 232Th), which will ensure sufficient fuel supply for a very long time. Many Generation IV reactors will make use of fast-neutron induced fission to produce energy (i.e. no neutron moderation is needed)

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