Authors & Affiliations

Andrianova O.N., Koshcheev V.N., Lomakov G.B., Manturov G.N.
A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Andrianova O.N. – Dr. Sci. (Tech.), Senior Resecher, A.I. Leypunsky Institute for Physics and Power Engineering.
Koshcheev V.N. – Dr. Sci. (Tech.), Chief Researcher of Safety Department,A.I. Leypunsky Institute for Physics and Power Engineering.
Lomakov G.B. – Researcher, A.I. Leypunsky Institute for Physics and Power Engineering. Contacts: 1, pl. Bondarenko, Obninsk, Kaluga region, Russia, 249033. Tel.:(484) 399-85-65; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Manturov G.N. – Dr. Sci. (Tech.), Head of Laboratory, A.I. Leypunsky Institute for Physics and Power Engineering.

Abstract

The paper presents the results of an analysis of calculation-to-experimental discrepancies in new evaluations of differential experiments on neutron transmission through silicon samples and integral experiments at the BFC facilities from the IRPHEP handbook, which were carried out in different years at the IPPE (Obninsk, Russia) to examine the properties of fuel and structural materials and propose adjustments of the uranium-235 and silicon neutron cross-sections.

This series of studies is an example of the implementation of a combined analysis of differential and integral experiments to correct the evaluated neutron data. The paper analyzes the possible reasons for calculation-to-experimental discrepancies associated with the representation of nuclear data on the resonance structure of neutron cross sections in transport and nuclear data processing codes, as well as some questions related to the influence of the resonant structure of neutron cross sections on the measured characteristics.

Keywords
neutron transmission, BFS, nuclear data, resonance self-shielding effects

Article Text (PDF, in Russian)

References

UDC 539.17.013

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants", 2017, issue 1, 1:10