Estimation of radiative capture13B(n, δ30+1)14B reaction rate in the modified potential cluster model
Tkachenko A.S. Burkova N.A. Yeleusheva B.M. Dubovichenko S.B.
October 2023Institute of Physics
Chinese Physics C
2023#47Issue 10
We discuss current attempts to employ the modified potential cluster model to describe the available experimental data on the13B(n, δ30+1)14B total cross-sections. The estimated results of the M1 and E1 transitions from the n13B scattering states to the ground and first excited states of14B are presented. The 1st resonance at Ex = 1. 275 MeV (1+) is revealed in both the cross-section and reaction rate. Within the variation in the asymptotic constant, a thermal cross-section interval of 5.1 - 8.9 mb is proposed. Based on the theoretical total cross-sections at energies of 0.01 eV to 5 MeV, we calculate the reaction rate in the temperature range of 0.01 to 10T9. The ignition T9 values of the13B(n, δ30+1)14B reaction depending on a neutron number density of ∼ 1022 cm-3 are determined. The radiative neutron capture reaction rates on the boron10-13B and carbon12-14 isotopes are compared.
14B nucleus , potential cluster model , r-process , radiative neutron capture , reaction rate , total cross-sections
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Fesenkov Astrophysical Institute, Almaty, 050020, Kazakhstan
al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Fesenkov Astrophysical Institute
al-Farabi Kazakh National University
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