New measurements of differential and total cross sections for the 12 C(p, γ ) 13 N reaction have been made at beam energies of E p = 354, 390, 460, 463, 565, 750, and 1061 keV. Analysis of the astrophysical S factor S(E) for the 12 C(p, γ ) 13 N reaction at low energies and of the reaction rates has been carried out within the R-matrix approach by using the previously measured nuclear vertex constant (or the respective asymptotic normalization coefficient) for the virtual decay 13 N → p + 12 C to fix the direct capture part of the amplitude in S(E). It is demonstrated that the R-matrix approach, using the measured asymptotic normalization coefficient, can be employed as an ideal tool, minimizing the uncertainties associated with a calculation of the direct capture cross section of the 12 C(p, γ ) 13 N reaction at extremely low energies. New information on the proton and γ width for the first excited state of 13 N is obtained.
A possibility of describing experimental data for the astrophysical S-factor of p 6 Li capture at low energies is discussed within the potential cluster model with forbidden states.
Abstract:The results of new experimental measurements of p 16 O elastic scattering in the energy range of 0.6-1.0 MeV at angles of 40-160 are given. Phase shift analysis of p 16 O elastic scattering was made using these and other experimental data on differential cross sections in excitation functions and angular distributions at energies of up to 2.5 MeV.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.