Astrophysical S factor C-13(p,gamma)N-14 and asymptotic normalization coefficients

0185701 - UJF-V 20027195 RIV US eng J - Článek v odborném periodiku
Mukhamedzhanov, A. M. - Azhari, A. - Burjan, Václav - Gagliardi, C. A. - Kroha, Václav - Sattarov, A. - Tang, X. - Trache, L. - Tribble, R. E.
Astrophysical S factor C-13(p,gamma)N-14 and asymptotic normalization coefficients.
Physical Review. C. Roč. 66, č. 2 (2002), s. 027602. ISSN 0556-2813
Grant CEP: GA MŠMT ME 385; GA ČR GA202/01/0709
Klíčová slova: thermonuclear reaction-rates
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 2.848, rok: 2002

We reanalyze the C-13(p,gamma)N-14 radiative capture reaction within the R-matrix approach. The low-energy astrophysical S factor has important contributions from both resonant and onresonant captures. The normalization of the nonresonant component of the transition to a particular N-14 bound state is expressed in terms of the asymptotic normalization coefficents (ANC). In the analysis we use the experimental ANC`s inferred from the C-13(N-14,C-13)N-14 and C-13(He-3,d)N-14 reactions. The fits of the calculated S factors to the experimantal data are sensitive to the ANC values and are used to test the extracted ANC`s. We find that for transitions to all the states in N-14, except the excited state, the ANC`s determined from the transfer reactions provide the best fit. The astrophysical factor we obtain, S(0)=7.7+/-1.1 keV b, is in excellent agreement with previous results.
Trvalý link: http://hdl.handle.net/11104/0082084