International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07462

Benchmarking of thorium-232 evaluations against spherical transmission and (n,xn) reaction experimental data

S.P. Simakov¹, M.G. Kobozev², A.A. Lychagin², V.A. Talalaev², D.Yu. Chuvilin³ and V.M. Maslov<sup>4

1</sup>  Forschungszentrum Karlsruhe, Institute for Reactor Safety, 76021 Karlsruhe, Germany
²  Institute of Physics and Power Engineering, 249030 Obninsk, Russia
³  RRC ``Kurchatov Institute'', 123182 Moscow, Russia
⁴  Joint Institute for Nuclear and Energy Research, 220109 Minsk-Sosny, Belarus

simakov@irs.fzk.de

Published online: 21 May 2008

Abstract
The neutron leakage spectra from a thorium sphere of 26 cm outer and 6 cm inner diameters with a central T-D and ²⁵²Cf neutron sources measured at the Institute of Physics and Power Engineering as well as available in the literature measured differential cross sections for Th(n,xn) reaction at 14 MeV were used for benchmarking of the evaluated cross sections from ENDF (versions B-VII.0 and B-VI.8), JEFF-3.1 and Maslov'07 libraries. It was finally concluded that while it is difficult to prefer any of these libraries relying on spherical benchmarks validation results, Th(n,xn) differential cross sections are certainly better reproduced by ENDF/B-VII.

© CEA 2008