Study of the 7Be(p, γ)8B reaction with the Coulomb dissociation method.

Details Study of the 7Be(p, γ)8B reaction with the Coulomb dissociation method. Study of the 7Be(p, γ)8B reaction with the Coulomb dissociation method.

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jpsj...65.1256i&link_type=abstract

Journal of the Physical Society of Japan, Vol. 65, No. 5, p. 1256 - 1263

Astronomy and Astrophysics

Astrophysics

21

Nuclear Reactions: Astrophysics, Solar Neutrinos

Scientific paper

The Coulomb-dissociation cross section for the process 8B→7Be+p in the field of 208Pb was measured at E(8B) = 46.5 A MeV. The 7Be(p, γ)8B cross section relevant to the high-energy 8B solar-neutrino production was extracted at EC.M. = 0.6 - 1.7 MeV. Two theoretical models on the structure of 8B were used to evaluate possible corrections due to M1 and E2 admixtures to the dominant E1 cross sections. Their overall effect is shown to be small regardless of the choice of the models. The present result is consistent with the results of the direct measurements of Filippone et al. (1983) and Vaughn et al. (1970) within errors. This result suggests further studies with the Coulomb-dissociation method to extract astrophysical S17 factor ≡2 keV relevant to the high-energy solar-neutrino flux.

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