The {sup 10}B ({sup 7 }Be,thinsp{sup 8}B){sup 9}Be Reaction and the {sup 7}Be ( p,thinsp{gamma}){sup 8}B S Factor

The [sup 10]B([sup 7]Be,thinsp[sup 8] B)[sup 9] Be reaction has been studied with an 84 MeV [sup 7]Be radioactive beam. The measured cross section determines the asymptotic normalization coefficients for the virtual transitions [sup 7]Be+p[leftrightarrow] [sup 8] B . These coefficients specify the amplitude of the tail of the [sup 8]B wave function in the two-body channel [sup 7]Be+p , and may be used to calculate the S factor for the direct capture reaction [sup 7]Be( p,thinsp[gamma])[sup 8] B at solar energies, S[sub 17](0) . We find that S[sub 17](0)=17.8[plus minus]2.8 eVthinspb . [copyright] [ital 1999] [ital The American Physical Society]

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