Nuclear Physics and Atomic Energy


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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Nucl. Phys. At. Energy 2018, volume 19, issue 4, pages 341-349.
Section: Nuclear Physics.
Received: 24.09.2018; Accepted: 11.10.2018; Published online: 14.02.2019.
PDF Full text (ua)
https://doi.org/10.15407/jnpae2018.04.341

Mechanisms of 13C(11B,7Li)17O reaction at the 11B ion energy 45 MeV

S. Yu. Mezhevych1, A. T. Rudchik1,*, K. Rusek2, K. W. Kemper3, A. A. Rudchik1, O. A. Ponkratenko1, S. B. Sakuta4

1 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 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 + 16 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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