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

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V. Yu. Korda¹, A. S. Molev¹, L. P. Korda<sup>2

1</sup>Institute of Electrophysics and Radiation Technologies, National Academy of Sciences of Ukraine, Kharkiv
²National Science Center "Kharkiv Institute of Physics and Technology", National Academy of Sciences of Ukraine, Kharkiv

Abstract: We propose a new approach, based on the evolutionary algorithm, which enables to extract a scattering matrix S(l) as a complex function of angular momentum l directly from the nucleus-nucleus elastic scattering data at intermediate energies without any additional model assumptions implied. Due to the automatic monitoring of the scattering matrix derivatives, the obtained S-matrix for ¹⁶О - ¹⁶О-scattering at 350 MeV is determined by the modulus and nuclear phase, which are smooth monotonic functions of angular momentum. We show the independence of the final S - matrix shapes of the primary model representations chosen to be the commonly used phenomenological ones.

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