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, Russian   Periodicity: 4 times per year   Open access peer reviewed journal

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S. Yu. Mezhevych¹, A. T. Rudchik^1,*, K. Rusek², K. W. Kemper³, A. A. Rudchik¹, O. A. Ponkratenko¹, S. B. Sakuta<sup>4

1</sup> Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
² Heavy Ion Laboratory, University of Warsaw, Warsaw, Poland
³ Physics Department, Florida State University, Tallahassee, USA
⁴ National Research Center "Kurchatov Institute", Moscow, Russia

^*Corresponding author. E-mail address: rudchik@kinr.kiev.ua

Abstract: Reaction ¹³C(¹¹B,⁷Li)¹⁷O at the energy Е_lab(¹¹B) = 45 MeV for the ground and excited states of the ⁷Li and ¹⁷O nuclei was studied. The reaction experimental data were analyzed within the coupled-reaction-channels method (CRC). The ¹³C + ¹¹B elastic scattering channel and one- and two-step reactions transferring nucleons and clusters were included in the coupling scheme. The spectroscopic amplitudes of nucleons and clusters needed for the CRC-calculations were computed within the translationally invariant shell model (TISM). The Woods-Saxon (WS) potential was used for the entrance reaction channel with the parameters deduced from the CRC-analysis of the ¹¹B + ¹³C elastic scattering experimental data when the potential WS and the folding-potential (DF) with imaginary part, parameters of which were deduced from the fitting of the CRC cross sections to the ¹³C(¹¹B,⁷Li)¹⁷O reaction experimental data, were used for the exit ⁷Li + ¹⁷O reaction channel. The parameters of the imaginary WS-potential were deduced in the same way. The parameters of the real part of this potential were obtained by fitting it to the peripheral region of the DF-potential. Isotopic differences of the ¹³C(¹¹B,⁷Li)¹⁷O reaction cross sections using the parameters of ⁷Li + ¹⁷O, ⁷Li + ¹⁶О and ⁷Li + ¹⁸O interaction for the exit reaction channel were observed.

Keywords: nuclear reactions, optical model, coupled-reaction-channels method, folding-model, spectroscopic amplitudes, optical potentials, reaction mechanisms.

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