Determination of the S_18 astrophysical factor from the breakup of ^9C

Details Determination of the S_18 astrophysical factor from the breakup of ^9C Determination of the S_18 astrophysical factor from the breakup of ^9C

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dnp.cf006t&link_type=abstract

American Physical Society, 2002 Fall Meeting of the Division of Nuclear , abstract #CF.006

Astronomy and Astrophysics

Astrophysics

Scientific paper

We have used existing data on the one-proton-removal cross section of ^9C at 285 MeV/u and Glauber model calculations to extract the asymptotic normalization coefficient for the wave function of the last proton in the ground state of ^9C. The calculations are done first using folded potentials starting from two different effective nucleon-nucleon interactions and second in the optical limit using three nucleon-nucleon interactions, and the results are found to be consistent, with no new parameters adjusted. We find C^2(p_3/2)+C^2(p_1/2)=1.22 0.13 fm-1. From this result we obtain the astrophysical factor for the proton radiative capture reaction ^8B(p,γ )^9C as S_18(0)=46 6 eVb. The calculated energy dependence of the astrophysical S-factor for the energy region E_cm=0-0.8 MeV and the reaction rates for T_9=0-1 are included.

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