Abstract13 N(p, γ) 14 O is one of the key reactions in the hot CNO cycle which occurs at stellar temperatures around T 9 ≥ 0.1. Up to now, some uncertainties still exist for the direct capture component in this reaction, thus an independent measurement is of importance. In present work, the angular distribution of the 13 N(d, n) 14 O reaction at E c.m. = 8.9 MeV has been measured in inverse kinematics, for the first time. Based on the distorted wave Born approximation (DWBA) analysis, the nuclear asymptotic normalization coefficient (ANC), C 14 O 1,1/2 , for the ground state of 14 O → 13 N + p is derived to be 5.42 ± 0.48 fm −1/2 . The 13 N(p, γ) 14 O reaction is analyzed with the R-matrix approach, its astrophysical S-factors and reaction rates at energies of astrophysical relevance are then determined with the ANC. The implications of the present reaction rates on the evolution of novae are then discussed with the reaction network calculations.
Abstract. The angular distribution of the 2 H( 6 He, 7 Li)n reaction was measured with a secondary 6 He beam of 36.4 MeV for the first time. The proton spectroscopic factor of 7 Li ground state was extracted to be 0.42 ± 0.06 by normalizing the calculational differential cross-sections with the distorted-wave Born approximation to the experimental data. It was discussed that the uncertainty of extracted spectroscopic factors from the one-nucleon transfer reactions induced by deuteron might be reduced by determining the volume integrals of imaginary optical potentials precisely.
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