AERTS, G.; ANDRIAMONJE, S.; AUDOUIN, L.; BAUMANN, P.; BERTHOUMIEUX, E.; CARRAPIÇO, C.; DAVID, S.; DRIDI, W.; FERRANT, L.; GUNSING, F.; HAAS, B.; ISAEV, S.; KARAMANIS, D.; KERVENO, M.; LAMPOUDIS, C.; PANCIN, J.; PAVLOPOULOS, P.; PERROT, L.; PLUKIS, A.; STEPHAN, C.; TASSAN-GOT, L.; MASSINI, C.

doi:10.1103/PhysRevC.85.044615

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AERTS, G.
Institut de Recherches sur les lois Fondamentales de l'Univers [IRFU]

ANDRIAMONJE, S.
Institut de Recherches sur les lois Fondamentales de l'Univers [IRFU]

AUDOUIN, L.
Institut de Physique Nucléaire d'Orsay [IPNO]

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Physical Review C. 2012, vol. 85, p. 044615

American Physical Society

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We have measured the neutron capture cross sections of the stable magnesium isotopes 24,25,26Mg in the energy range of interest to the s process using the neutron time-of-flight facility n_TOF at CERN. Capture events from a natural metal sample and from samples enriched in 25Mg and 26Mg were recorded using the total energy method based on C62H6 detectors. Neutron resonance parameters were extracted by a simultaneous resonance shape analysis of the present capture data and existing transmission data on a natural isotopic sample. Maxwellian-averaged capture cross sections for the three isotopes were calculated up to thermal energies of 100 keV and their impact on s-process analyses was investigated. At 30 keV the new values of the stellar cross section for 24Mg, 25Mg, and 26Mg are 3.8±0.2 mb, 4.1±0.6 mb, and 0.14±0.01 mb, respectively.< Leer menos

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Resonance neutron-capture cross sections of stable magnesium isotopes and their astrophysical implications

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