Constraints on the 7Be (p,γ) 8B radiative capture rate from charge symmetry

Details Constraints on the 7Be (p,γ) 8B radiative capture rate from charge symmetry Constraints on the 7Be (p,γ) 8B radiative capture rate from charge symmetry

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvc..70d7603e&link_type=abstract

Physical Review C, vol. 70, Issue 4, id. 047603

Physics

2

Radiative Capture, Coulomb Excitation, Solar Neutrinos

Scientific paper

Cross sections for the dipole radiative capture reactions 7Li (n,γ) 8Li and 7Be (p,γ) 8B are calculated in a two-body model, which is based on a Woods-Saxon parametrization of the nuclear interaction. The well depth is adjusted for each reaction channel so that the measured separation energies and s -wave scattering lengths are reproduced. The calculations are repeated for a wide range of the radius and the diffuseness of the interaction. The predicted S factor for the radiative proton capture on 7Be falls within a surprisingly narrow range of values when the model is calibrated to reproduce measurements of the mirror reaction 7Li (n,γ) 8Li . The simplified model used here is consistent with the shell model approach for proton capture on 7Be but it gives a significantly smaller cross section for neutron capture on 7Li .

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