Nuclear Physics and Atomic Energy

ядерна ф≥зика 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


 Home page   About 
Nucl. Phys. At. Energy 2021, volume 22, issue 3, pages 230-236.
Section: Nuclear Physics.
Received: 23.09.2021; Accepted: 22.12.2021; Published online: 22.02.2022.
PDF Full text (ua)
https://doi.org/10.15407/jnpae2021.03.230

6Li(10B,9Be)7Be reaction mechanisms. Structure and interaction of 9Be + 7Be nuclei

A. T. Rudchik1,*, A. A. Rudchik1, O. O. Chepurnov1, K. Rusek2, K. W. Kemper3, E. I. Koshchy4, S. Yu. Mezhevych1, Val. M. Pirnak1, O. A. Ponkratenko1, A. Stolarz2, R. Siudak5, A. P. Ilyin1, Yu. M. Stepanenko1, V. V. Uleshchenko1, Yu. O. Shyrma1

1 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 Cyclotron Institute, Texas A&M University, College Station, USA
5 H. Niewodniczanski Institute of Nuclear Physics, Cracow, Poland


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

Abstract: New experimental data of angular distributions for the 6Li(10B,9Be)7Be reaction were measured at the energy Elab(10B) = 51 MeV for the ground states of nuclei and excited 0.429 - 7.2 MeV states of 7Be. The reaction experimental data were analyzed within coupled-reaction-channels method (CRC) for many types of the nucleon and cluster transfers which spectroscopic amplitudes (factors) in the 9Be and 7Be nuclei were calculated using translation invariant shell model. The Woods - Saxon potential was used for CRC-calculations. The 6Li + 10B potential parameters were deduced before from the analysis of experimental data of 10B ions scattering by 6Li nuclei at the energy Elab(10B) = 51 MeV, and the 9Be + 7Be potential parameters for exit reaction channel were deduced from the CRC calculations fitting to the reaction experimental data. Thus, the information about the 9Be + 7Be optical potential, the basic reaction mechanisms and the 9Be and 7Be nuclei structures were deduced.

Keywords: nuclear reactions 6Li(10B,9Be)7Be data at E = 51 MeV, σ(θ), reaction mechanisms, parameters of 9Be + 7Be potential, spectroscopic amplitudes of nucleons and clusters in the 9Be and 7Be nuclei.

References:

1. S. Verma et al. Measurements of elastic scattering for 7Be, 7Li + 9Be systems and fusion cross sections for 7Li + 9Be system. Eur. Phys. J. Special Topics 150 (2007) 75. https://doi.org/10.1140/epjst/e2007-00270-0

2. A.T. Rudchik et al. Comparison of 7Li, 7Be + 9Be elastic scattering in the coupled-reaction-channels approach. Eur. Phys. J. A 41 (2009) 31. https://doi.org/10.1140/epja/i2009-10765-x

3. K.A. Weber et al. Elastic scattering of 7Li from light target nuclei. Nucl. Phys. A 186 (1972) 145. https://doi.org/10.1016/0375-9474(72)90130-3

4. K.W. Kemper et al. Spectroscopic information from the 9Be(7Li,6He)10B and 9Be(7Li,6Li)10Be reaction. Phys. Rev. C 15(5) (1977) 1726. https://doi.org/10.1103/PhysRevC.15.1726

5. F. Carstoin et al. Refractive effects in the scattering of loosely bound nuclei. Phys. Rev. C 70 (2004) 054610. https://doi.org/10.1103/PhysRevC.70.054610

6. A.T. Rudchik et al. Elastic and inelastic scattering of 10B ions by 6Li nuclei at energy 51 MeV. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 21(1) (2020) 29. (Ukr) https://doi.org/10.15407/jnpae2020.01.029

7. Yu.F. Smirnov, Yu.M. Tchuvilsky. Cluster spectroscopic factors for the p-shell nuclei. Phys. Rev. C 15 (1977) 84. https://doi.org/10.1103/PhysRevC.15.84

8. A.T. Rudchik, Yu.M. Tchuvilsky. Spectroscopic amplitude calculations for different clusters in the 1р-shell nuclei (code DESNA). Preprint of the Institute for Nuclear Research AS UkrSSR (Kyiv, 1982) 27 p. (Rus)

9. A.T. Rudchik, Yu.M. Tchuvilsky. Spectroscopic amplitudes of multinuclear clusters in the 1р-shell nuclei and multinuclear transfer reaction analysis. Ukr. J. Phys. 30 (1985) 819. (Rus)

10. A.N. Boyarkina. Structure of the Nuclei of the 1p Shell (Moskva: Moskovskiy Universitet, 1973) 62 p.

11. J. Cook. DFPOT: a program for the calculation of double folded potentials. Comp. Phys. Com. 25 (1982) 125. https://doi.org/10.1016/0010-4655(82)90029-7