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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A. T. Rudchik^1,*, A. A. Rudchik¹, O. O. Chepurnov¹, K. Rusek², K. W. Kemper³, E. Piasecki², A. Stolarz², A. Trczinska², Val. M. Pirnak¹, O.A. Ponkratenko¹, I. Strojek⁴, E. I. Koshchy⁵, R. Siudak⁶, S. B. Sakuta⁷, A. P. Ilyin¹, Yu. M. Stepanenko¹, V. V. Uleshchenko¹, Yu. O. Shyrma<sup>1

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


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

Abstract: Angular distributions of the elastic and inelastic scattering of ¹⁵N ions by ⁶Li nuclei were measured at the energy E_lab(¹⁵N) = 81 MeV. The data were analyzed within the coupled-reaction-channels method (CRC). The elastic and inelastic scattering, spin reorientation of ⁶Li as well as the one- and two-step transfer reactions were included in the channels-coupling scheme. The potential of Woods - Saxon form (WS) and double folded potential DF for the ¹⁵N + ⁶Li nuclei interaction were used in CRC-calculations. The WS potential parameters, deformation parameters of ⁶Li and ¹⁵N nuclei were deduced and the information about the role of other processes in the ¹⁵N + ⁶Li elastic and inelastic scattering was obtained. Spectroscopic amplitudes of nucleons and clusters, calculated according to a translational invariant shell model, were used in the CRC-calculations. It was established that the potential scattering and the ⁶Li spin reorientation are dominated in the ¹⁵N + ⁶Li elastic scattering. Contributions from particle transfers in this scattering were negligible. Comparing the ¹⁵N + ⁶Li and ¹⁵N + ⁷Li elastic scattering at the energy E_lab(¹⁵N) = 81 MeV, it was found marked differences between the experimental data and interaction potentials (isotopic effects).

Keywords: nuclear reactions ⁶Li(¹⁵N, ¹⁵N), E = 81 MeV, particle spectra, σ(θ), nuclear scattering mechanisms, nuclear deformation parameters.

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