Asymptotic normalization coefficients for 11B + p → 12C from the 11B(10B, 9Be)12C reaction and the 11B(p, γ)12C astrophysical S-factor


Sakhiyev S.K. Artemov S.V. Burtebayev N. Sakuta S.B. Igamov S.B. Nassurlla M. Rusek K. Wolińska-Cichocka M. Amangeldi N. Nassurlla M. Trzcińska A. Yergaliuly G. Ergashev F.K. Tojiboev O.R. Son I.Y. Sabidolda A. Khojayev R. Mukanov Y.B. Issayev D.A.
December 2024Elsevier B.V.

Results in Physics
2024#67

The 11B(10B,9Be)12C reaction was studied at the energy of 41.3 MeV with transitions to the ground (0+) and low-lying excited 4.44 MeV (2+) and 9.64 MeV (3−) states of 12C nucleus. The analysis of the measured angular distributions was carried out using a modified distorted wave (MDWBA) method, assuming a one-step proton transfer mechanism. It was shown that at small angles (in the region of the main diffraction maximum) this reaction occurs on the nuclear surface with the dominance of a one-step process. This made possible to determine the values of asymptotic normalization coefficients (ANC) for 11B + p → 12C. The squared ANCs equal to 322 ± 76 fm−1, 32.8 ± 8.4 fm−1 and 1.26 ± 0.44 fm−1 for 0+, 2+ and 3− states of the 12C nucleus respectively were obtained. These values were used to take into account the contribution of the direct process in the calculation of astrophysical S-factors for the radiative capture of a proton by the 11B nucleus at astrophysical energies.

astrophysical S-factor , asymptotic normalization coefficient (ANC) , Heavy ion beam , modified distorted wave Born approximation (MDWBA) , peripheral proton transfer

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Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Institute of Nuclear Physics, Tashkent, 100214, Uzbekistan
Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
National Research Center “Kurchatov Institute”, Moscow, 123182, Russian Federation
Branch of National Research Nuclear University MEPhI, Tashkent, 100214, Uzbekistan
Heavy Ion Laboratory, University of Warsaw, Warsaw, PL-02-093, Poland
L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan

Institute of Nuclear Physics
Institute of Nuclear Physics
Al-Farabi Kazakh National University
National Research Center “Kurchatov Institute”
Branch of National Research Nuclear University MEPhI
Heavy Ion Laboratory
L.N. Gumilyov Eurasian National University

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