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 Nuclear Physics A 752 (2005) 514c
 New determination of the $^{12}C (\alpha, \gamma)^{16}O$ reaction rate from the gamma-ray angular distribution measurements
 (2005)
 The astrophysical reaction rate of the key reaction 12C(alpha,gamma)16O has been determined with the +/- 25% accuracy by two direct experiments at the Stuttgart DYNAMITRON in the framework of a large internatiuonal collaboration. The E1 and E2 capture amplitudes were deduced from 37 new gamma angular distributions in the energy range Ecm = 0.89-2.8 MeV. Highest sensitivity at a picobarn level was reached by using either a close 4pi array of 9 EUROGAM Phase II detectors or the GANDI array of 4 large movable Ge detectors. The S-factor values of the S_E1 and S_E2 excitation functions were calculated by a R-matrix analysis considering also elastic alpha-scattering data and the beta-delayed alpha-decay on 16N.
 Thème(s) : Physique/Physique Nucléaire Expérimentale
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 in2p3-00023747, version 1 http://hal.in2p3.fr/in2p3-00023747 oai:hal.in2p3.fr:in2p3-00023747 Contributeur : Yvette Heyd <> Soumis le : Mardi 1 Mars 2005, 10:35:57 Dernière modification le : Samedi 1 Octobre 2005, 15:39:33