Electromagnetic dissociation of 8B and the astrophysical S factor for 7Be(p,gamma)8B

Abstract

We present S factor data obtained from the Coulomb dissociation of 83 MeV/nucleon 8B, and analyze 7Be longitudinal momentum distributions measured at 44 and 81 MeV/nucleon using a potential model, first-order perturbation theory, and dynamical solution of the time-dependent Schroedinger equation. Comparing our results with independent continuum-discretized coupled channels calculations, we study the reaction model and beam energy dependence of the E2 contribution to the dissociation cross section. By fitting radiative capture and Coulomb breakup data taken below relative energies of 400 keV with potential models constrained by 7Li + n and 7Be + p elastic scattering data, we examine the mutual consistency of recent S17 measurements and obtain a recommended value for S17(0) of 18.6 +/- 0.4 (experimental) +/- 1.1 (extrapolation) eV b (1 sigma). This result is in good agreement with recent experimental determinations of the asymptotic normalization coefficient of the valence proton wave function in 8B.

arXiv comment6 pages, 5 figures, 3 tables, submitted to Phys. Rev. C

References in corpus (22)

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Solar Models: current epoch and time dependences, neutrinos, and helioseismological properties
• Solar Fusion Cross Sections
• A Measurement of the Coulomb Dissociation of 8B at 254 MeV/nucleon and the 8B Solar Neutrino Flux
• Imprint of SNO neutral current data on the solar neutrino problem
• 7Be(p,gamma)8B astrophysical S-factor from precision cross section measurements
• A New Precision Measurement of the 7Be(p,gamma)8B Cross section with an Implanted 7Be Target
• Coulomb dissociation of 8B and the low-energy cross section of the 7Be(p,gamma)8B solar fusion reaction
• Electromagnetic Dissociation of 8B and the Rate of the 7Be(p,gamma)8B Reaction in the Sun
• Low energy measurement of the 7Be(p,gamma)8B cross section
• S17(0) Determined from the Coulomb Breakup of 83 MeV/nucleon 8B
• Asymptotic normalization coefficients for 8B->7Be+p from a study of 8Li->7Li+n
• Measurement of E2 Transitions in the Coulomb Dissociation of 8B
• Asymptotic normalization coefficient of ^{8}B from breakup reactions and the S_{17} astrophysical factor
• A New Measurement of the Proton Capture Rate on 7Be and the S17(0) Factor
• Extrapolation of the astrophysical S factor for ^7Be(p,gamma)^8B to solar energies
• Coulomb displacement energy and the low-energy astrophysical S factor for the Be7(p,gamma)B8 reaction
• If sterile neutrinos exist, how can one determine the total solar neutrino fluxes?
• Radiative capture and electromagnetic dissociation involving loosely bound nuclei: the ${}^8$B example
• Breakup of the weakly bound 17F nucleus
• Role of spectroscopic factors in the potential-model description of the Be7(p,gamma)B8 reaction

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