Asymptotic normalization coefficients from breakup of light nuclei and astrophysical S-factors

Details Asymptotic normalization coefficients from breakup of light nuclei and astrophysical S-factors Asymptotic normalization coefficients from breakup of light nuclei and astrophysical S-factors

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..haw.ff010t&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

We show that asymptotic normalization coefficients (ANC) can be reliably extracted from one nucleon breakup reactions of loosely bound nuclei at 30-200 MeV/u. In particular, the cases of ^11Be, ^14B and ^15C are discussed. Rather than the spectroscopic factors, the ANCs are extracted for the ground states of these nuclei, and consequently the rms radii of their halos. Furthermore the ANC for the ground state of ^15C is used to extract the reaction rate for the neutron radiative capture reaction ^14C(n,γ )^15C at stellar energies. It is shown that this can become a powerful method for the evaluation of the non-resonant contribution to the radiative capture of neutrons and protons on unstable, far from stability, targets at astrophysical energies. The result is that difficult direct nuclear astrophysics measurements on exotic or very exotic targets and at very low energies, can be replaced with breakup studies at large energies, requiring rare beams of lesser quality.

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