The $^6$Li$(p, \gamma)^7$Be reaction rate in the light of the new LUNA data
| Autor: | Dubovichenko, S. B., Tkachenko, A. S., Kezerashvili, R. Ya., Burkova, N. A., Dzhazairov-Kakhramanov, A. V. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physical Review C 105, 065806 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.105.065806 |
| Popis: | We present new calculations of the astrophysical $S-$factor and reaction rate for the $^{6}$Li$(p,\gamma )^{7}$Be reaction at energies of 10 keV to 5 MeV in the framework of a modified potential cluster model with forbidden states, including low lying resonances. The astrophysical $S(E)-$factor is compared with the available experimental data and calculations done within different models. The results for the $S-$factor are in good agreement with the data set (for $E<0.3$ MeV) and calculations (for $E<0.6$ MeV) of LUNA collaboration (Phys. Rev. C 102$,$ 052802, 2020). The recommended extrapolated zero value $S(0)$ turned out to be 101 eV $\cdot $ b. Using the theoretical total cross-sections$,$ the $^{6}$Li$(p,\gamma)^{7} $Be capture reaction rate is calculated at temperatures ranging from 0.01 to 10 $T_{9}$ and compared with NACRE and NACRE II. Analytical expressions for the $S-$factor and reaction rate are given, and the effect of low-lying resonances on the reaction rate is estimated. We suggest to update the NACRE and NACRE II databases in light of the new LUNA data and present calculations. Comment: 17 pages, 10 figures |
| Databáze: | arXiv |
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