EPJ Nuclear Sci. Technol. 9, 30 (2023)
https://doi.org/10.1051/epjn/2023016

Regular Article

Templates of expected measurement uncertainties for average prompt and total fission neutron multiplicities

¹ Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
² National Institute of Standards and Technology, Gaithersburg, MD, 20899-8463, USA
³ Lancaster University, Lancaster, LA1 4YW, UK
⁴ CEA, DAM, DIF, F-91297 Arpajon, France
⁵ Univ. Bordeaux, LP2I, UMR5797, CNRS, F-33170 Gradignan, France
⁶ Université Paris-Saclay, CEA, LMCE, 91680 Bruyères-le-Châtel, France

^* e-mail: dneudecker@lanl.gov

Received: 28 March 2023
Received in final form: 18 July 2023
Accepted: 30 August 2023
Published online: 9 November 2023

Abstract

In this paper, we provide templates of measurement uncertainty sources expected to appear for average prompt- and total-fission neutron multiplicities, ${\overline{\nu }}_p$ and ${\overline{\nu }}_t$, for the following measurement types: absolute manganese-bath experiments for ${\overline{\nu }}_t$, absolute and ratio liquid-scintillator measurements for ${\overline{\nu }}_p$. These templates also suggest a typical range of these uncertainties and their correlations based on a survey of available experimental data, associated literature, and feedback from experimentalists. In addition, the information needed to faithfully include the associated experimental data into the nuclear-data evaluation process is provided.