Reaction rate of radiative p 12C capture in a modified potential cluster model
Dubovichenko S.B. Burkova N.A. Tkachenko A.S. Samratova A.
1 April 2025Institute of Physics
Chinese Physics C
2025#49Issue 4
The astrophysical S-factor of the 12C(p, γ 0)13N reaction at energies from 25 keV to 5 MeV within the framework of a modified potential cluster model with forbidden states is considered. The experimental phase shifts resonant , , and non-resonant at the energies up to E c.m. = 3 MeV are reproduced with high accuracy, which provides the appropriate agreement with the experimental data for the S-factor of 1950−2023 years. Two sets of asymptotic constant are used: Set I refers to C w = 1.30(2), and Set II refers to C w = 1.37(1). Set I leads to the astrophysical factor S(25) = 1.34 ± 0.02 keV·b, which is in agreement with data by Skowronski et al., 2023 - 1.34 ± 0.09 keV·b; Set II gives S(25) = 1.49 ± 0.02 keV·b, which is in agreement with data by Kettner et al., 2023 - 1.48 ± 0.09 keV·b. The reaction rates of 12C(p, γ 0)13N at temperatures T 9 from 0.001 to 10 are calculated. The detailed comparison with some models, the R-matrix approach, and NACRE II data for reaction rates is considered.
astrophysical S-factor , elastic phase shifts , modified potential model , radiative proton capture , reaction rate
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Fesenkov Astrophysical Institute, ASA, MDDIAI RK, Almaty, 050020, Kazakhstan
al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Fesenkov Astrophysical Institute
al-Farabi Kazakh National University
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