Coulomb dissociation of 8B and the low-energy cross section of the 7Be(p,gamma)8B solar fusion reaction

F. Schuemann; F. Hammache; S. Typel; F. Uhlig; K. Suemmerer; I. Boettcher; D. Cortina; A. Foerster; M. Gai; H. Geissel; U. Greife; 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/physrevlett.90.232501

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Coulomb dissociation of 8B and the low-energy cross section of the 7Be(p,gamma)8B solar fusion reaction

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Abstract

An exclusive measurement of the Coulomb breakup of 8B into 7Be+p at 254 A MeV allowed to study the angular correlations of the breakup particles. These correlations demonstrate clearly that E1 multipolarity dominates and that E2 multipolarity can be neglected. By using a simple single-particle model for 8B and treating the breakup in first-order perturbation theory, we extract a zero-energy S factor of S-(17)(0) = 18.6 +- 1.2 +- 1.0 eV b.

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F. Schuemann, F. Hammache, S. Typel, F. Uhlig, K. Suemmerer, I. Boettcher, D. Cortina, A. Foerster, M. Gai, H. Geissel, U. Greife, 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. 2003-06-04. Coulomb dissociation of 8B and the low-energy cross section of the 7Be(p,gamma)8B solar fusion reaction. https://doi.org/10.1103/physrevlett.90.232501

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