How accurately we know the standard $^{252}$Cf(sf) neutron multiplicity?
arXiv:1908.00272
The paper investigates how well the total neutron multiplicity of the ^252Cf spontaneous fission source is known, focusing on potential hidden uncertainties and correlations in the experimental data used for neutron standards.
Abstract
Small uncertainties obtained for the Neutron Standards have been associated with possible missing correlations in the input data, with an incomplete uncertainty budget of the employed experimental database or with unrecognized uncertainty sources common to many measurements. While further detailed studies may improve the first two issues, the issue of potential unrecognized uncertainties and correlations between different experiments has long been neglected. We address this gap with a test-case study ons the evaluation of the total neutron multiplicity of the $^{252}$Cf(sf) source, which is included in the evaluation of the Thermal Neutron Constants within the Neutron Standards.
Presented at the American Nuclear Society winter meeting, ANTPC November 2018, Orlando, FL, USA