Asymptotic normalization coefficient of ^8B from breakup reactions and the S_17 astrophysical factor

Details Asymptotic normalization coefficient of ^8B from breakup reactions and the S_17 astrophysical factor Asymptotic normalization coefficient of ^8B from breakup reactions and the S_17 astrophysical factor

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..haw.ff004t&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 breakup of ^8B is described in terms of an extended Glauber model. The parallel momentum distribution of core fragments is fully reproduced. The ^8B ANC extracted for the ground state of this nucleus from breakup data at several energies and on different targets, C_tot^2=3D0.437± .041 fm-1, leads to the astrophysical factor S_17(0)=3D 16.9± 1.7 eV\cdot b for the key reaction for solar neutrino production ^7Be(p,γ )^8B. The procedure described here is more general, providing an indirect method to determine reaction rates of astrophysical interest with beams of loosely bound radioactive nuclei.

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