ANC Measurements at Texas A&M

Details ANC Measurements at Texas A&M ANC Measurements at Texas A&M

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..haw.kb003g&link_type=abstract

American Physical Society, First Joint Meeting of the Nuclear Physicists of the American and Japanese Physical Societies October

Astronomy and Astrophysics

Astrophysics

Scientific paper

The asymptotic normalization coefficient (ANC) for the nuclear system A+p → B specifies the amplitude of the tail of the two-body overlap function for the nucleus B when the core A and the proton are separated by a distance large compared to the nuclear radius. The ANC, which may be determined from the cross section of peripheral nuclear reactions, can be used to determine the corresponding direct radiative capture cross section, or astrophysical S factor, at stellar energies. It can also be used in an R-matrix approach to estimate the gamma strength of loosely-bound resonances. Recently, we have used peripheral proton transfer reactions to determine the astrophysical S factors for ^11C(p,γ)^12N, ^13C(p,γ)^14N, and ^14N(p,γ)^15O, and a reanalysis of break-up reaction cross sections to obtain an independent determination of the S factor for ^7Be(p,γ)^8B. This work was supported in part by the U.S. Dept. of Energy, the National Science Foundation, and the Robert A. Welch Foundation.

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