Effects of B-8 size on the low-energy Be7(p,gamma)B8 cross section
classification
⚛️ nucl-th
astro-phnucl-ex
keywords
gammamodelthree-clusterastrophysicalb8-li8calculateconstraintscoulomb
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We calculate several "size-like" B-8 observables within the microscopic three-cluster model and study their potential constraints on the zero-energy astrophysical S_{17}(0) factor of the Be7(p,gamma)B8 reaction. We find within our three-cluster model that a simultaneous reproduction of the experimental data for the B-8 radius and quadrupole moment and of the B8-Li8 Coulomb displacement energy implies S_{17}(0)=(23-25) eVb.
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