Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (ua)

I. O. Korzh, N. T. Sklyar

Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

Abstract: Applicability of the optical statistical approach version, based on the spherical optical model, model of an excited core and modern versions of statistical model, for the description of a neutrons inelastic scattering by ⁶³Cu and ⁶⁵Cu nuclei was studied first in the energy range from a threshold up to 9 МeV. Within the framework of this approach the possibility of an adequate description of experimental data set on inelastic scattering cross-sections was shown. The results of the theoretical analysis were used for investigation of fast neutrons inelastic scattering mechanism by the studied nuclei. It was shown, that a compound mechanism of inelastic scattering gives the predominant contribution to excitation cross-sections of the lowest three levels of studied nuclei only in the neutron energy range up to 5 МeV, and at the end of studied energy range these levels are excited by means of the direct scattering mechanism.

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