Artículo
Neutron capture cross section of unstable 63Ni: implications for stellar nucleosynthesis
Autor/es | Quesada Molina, José Manuel
Lederer Woods, Claudia Massimi, C. Altstadt, Sebastian G. Andrzejewski, J. Audouin, Laurent Barbagallo, M. Bécares, V. |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2013-01-08 |
Fecha de depósito | 2017-07-14 |
Publicado en |
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Resumen | The 63Ni(n,γ) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were ... The 63Ni(n,γ) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT=5–100 keV with uncertainties around 20%. Stellar model calculations for a 25M⊙ star show that the new data have a significant effect on the s-process production of 63Cu, 64Ni, and 64Zn in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova. |
Agencias financiadoras | Austrian Science Found |
Identificador del proyecto | P20434
I428 |
Cita | Quesada Molina, J.M., Lederer, C., Massimi, C., Altstadt, S.G., Andrzejewski, J., Audouin, L.,...,Bécares, V. (2013). Neutron capture cross section of unstable 63Ni: implications for stellar nucleosynthesis. Physical Review Letters, 110 (2), 022501-1-022501-5. |
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