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- W1961311399 abstract "In an effort to better determine the Be-7(p, gamma)B-8 reaction rate, we have performed inclusive and exclusive measurements of the Coulomb dissociation of B-8. The former was a study of longitudinal momentum distributions of Be-7 fragments emitted in the Coulomb breakup of intermediate energy B-8 beams on Pb and Ag targets. Analysis of these data yielded the E2 contribution to the breakup cross section. In the exclusive measurement. we determined the cross section for the Coulomb breakup of B-8 on Pb at low relative energies in order to infer the astrophysical S factor for the Be-7(p, gamma)B-8 reaction. Interpreting the measurements with first-order perturbation theory, we obtained S-E2/S-E1 = 4.7(-1.3)(+2.0) x 10(-4) at E-rel = 0.6 MeV, and S-17(0) =17.8(-1.2)(+1.4) eV b. Semiclassical first-order perturbation theory and fully quantum mechanical continuum-discretized coupled channels analyses yield nearly identical results for the El strength relevant to solar neutrino flux calculations, suggesting that theoretical reaction mechanism uncertainties need not limit the precision of Coulomb breakup determinations of the Be-7(p, gamma)B-8 S factor. A recommended value of S-17(0) based on a weighted average of this and other measurements is presented." @default.
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- W1961311399 date "2001-05-16" @default.
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- W1961311399 title "Electromagnetic dissociation of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>8</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant=normal>B</mml:mi></mml:math>and the rate of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>7</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant=normal>Be</mml:mi><mml:mo>(</mml:mo><mml:mi…" @default.
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- W1961311399 doi "https://doi.org/10.1103/physrevc.63.065806" @default.
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