Low-energy cross section of the 7Be(p,g)8B solar fusion reaction from Coulomb dissociation of 8B

F. Schuemann; S. Typel; F. Hammache; F. Uhlig; K. Suemmerer; I. Boettcher; D. Cortina; A. Foerster; M. Gai; H. Geissel; U. Greife; E. Grosse; N. Iwasa; P. Koczon; B. Kohlmeyer; R. Kulessa; H. Kumagai; N. Kurz; M. Menzel; T. Motobayashi; H. Oeschler; A. Ozawa; M. Ploskon; W. Prokopowicz; E. Schwab; P. Senger; F. Strieder; C. Sturm; Zhi-Yu Sun; G. Surowka; A. Wagner; W. Walus

doi:10.1103/physrevc.73.015806

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Low-energy cross section of the 7Be(p,g)8B solar fusion reaction from Coulomb dissociation of 8B

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Abstract

Final results from an exclusive measurement of the Coulomb breakup of 8B into 7Be+p at 254 A MeV are reported. Energy-differential Coulomb-breakup cross sections are analyzed using a potential model of 8B and first-order perturbation theory. The deduced astrophysical S_17 factors are in good agreement with the most recent direct 7Be(p,gamma)8B measurements and follow closely the energy dependence predicted by the cluster-model description of 8B by Descouvemont. We extract a zero-energy S_17 factor of 20.6 +- 0.8 (stat) +- 1.2 (syst) eV b.

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F. Schuemann, S. Typel, F. Hammache, F. Uhlig, K. Suemmerer, I. Boettcher, D. Cortina, A. Foerster, M. Gai, H. Geissel, U. Greife, E. Grosse, N. Iwasa, P. Koczon, B. Kohlmeyer, R. Kulessa, H. Kumagai, N. Kurz, M. Menzel, T. Motobayashi, H. Oeschler, A. Ozawa, M. Ploskon, W. Prokopowicz, E. Schwab, P. Senger, F. Strieder, C. Sturm, Zhi-Yu Sun, G. Surowka, A. Wagner, W. Walus. 2005-11-17. Low-energy cross section of the 7Be(p,g)8B solar fusion reaction from Coulomb dissociation of 8B. https://doi.org/10.1103/physrevc.73.015806

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