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

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

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

Authors

Description

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.
4 pages including 4 figures, LaTeX