235U Resonance Structure Effect on Computed Characteristics of Critical Assemblies in Large Physical Testing Facility with Softened Neutron Spectrum

• Published in: Atomic energy (New York, N.Y.) Vol. 121; no. 2; pp. 140 - 147
• Main Authors: Andrianova, O. N., Dulin, V. A., Dulin, V. V., Andrianov, A. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2016
• Subjects: Hadrons; Heavy Ions; Nuclear Chemistry; Nuclear Energy; Nuclear Physics; Physics; Physics and Astronomy

An unusual change of the contributed reactivity of uranium samples with 90% enrichment depending on the size was observed during experiments on the critical assembly of the large physical testing facility with a softened neutron spectrum: the reactivity became negative upon insertion of thin samples...