New result for the p7Be→8Bγ astrophysical S-factor from 10 keV to 5 MeV and reaction rate from 0.01 to 10 T9

Abstract

Abstract The astrophysical S-factor for the process p 7 Be → 8 Bγ of radiative capture by the 8B ground state is described up to 5 MeV, within the modified potential cluster model. The signatures of the S-factor resonances at 0.632, 2.18 and 3.36 MeV due to M1 and E2 transitions from the scattering of resonance P 1 3 , F 3 3 and D 2 3 waves to the ground P 2 3 state are illuminated using total cross sections, astrophysical S-factors and reaction rates at temperatures from 0.01 to 10.0 T 9 . Experimental data on the S-factor are reproduced well in the range 100 keV to 3 MeV. The importance of the input of the 0.632 MeV resonance to the reaction rate is proved. Our calculations (performed in advance) confirm the latest data for the S-factor at 19 keV.