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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А. Т. Rudchik^1,*, А. А. Rudchik¹, О. E. Kutsyk¹, К. Rusek², K. W. Kemper³, E. Piasecki², A. Stolarz², A. Trczińska², Val. М. Pirnak¹, О. А. Ponkratenko¹, I. Strojek⁴, E. І. Koshchiy⁵, R. Siudak⁶, S. B. Sakuta⁷, V. A. Plujko⁸, А. P. Ilyin¹, Yu. M. Stepanenko¹, V. V. Uleshchenko¹, Yu. O. Shyrma¹, V. V. Kheilo<sup>1

1</sup> Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
² Heavy Ion Laboratory, Warsaw University, Warsaw, Poland
³ Physics Department, Florida State University, Tallahassee, USA
⁴ National Institute for Nuclear Research, Warsaw, Poland
⁵ Cyclotron Institute, Texas A&M University, College Station, USA
⁶ H. Niewodniczanski Institute of Nuclear Physics, Krakow, Poland
⁷ Russian Research Centre “Kurchatov Institute”, Moscow, Russia
⁸ Taras Schevchenko Kyiv National University, Kyiv, Ukraine

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

Abstract: The new experimental data of the ¹²С(¹⁵N,¹⁴N)¹³С reaction cross-sections at the energy Е_lab(¹⁵N) = 81 MeV were measured for the ground and excited states of ¹⁴N and ¹³C nuclei. The experimental data were analyzed within the coupled-reaction-channels method (CRC) using channels-coupling scheme with the ¹⁵N + ¹²С elastic scattering and one- as well as two-step transfers of nucleons and clusters performing CRC-calculations with the Woods - Saxon potentials (WS) for the entrance and exit reaction channels. The WS potential parameters for the ¹²С + ¹⁵N nuclear interaction were taken from the previously studied elastic and inelastic scattering of ¹⁵N ions by ¹²С nuclei at the energy 81 MeV, and the WS potential parameters for the ¹⁴N + ¹³С reaction exit channel were deduced from fitting of the ¹²С(¹⁵N,¹⁴N)¹³C reaction data. The spectroscopic factors (amplitudes) of transferred in the reaction nucleons and clusters, used in the CRC-calculations, were computed within translational invariant shell model of 1p-shell. It was found that transfers of neutrons (n) and deuterons (d) dominate in this reaction. Multi-step transfers of nucleons and clusters give small contributions to the reaction data.

Keywords: nuclear reaction ¹²С(¹⁵N,¹⁴С)¹³N data, one- and two-step mechanisms of the reaction, coupled-reaction channels method, spectroscopic amplitudes of nucleons and clusters.

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