Artículo
62 Ni(n, γ) and 63 Ni(n, γ) cross sections measured at the n_TOF facility at CERN
Autor/es | Lederer Woods, Claudia
Massimi, C. Berthoumieux, E. Colonna, Nicola Dressler, R. Guerrero Sánchez, Carlos ![]() ![]() ![]() ![]() ![]() ![]() ![]() Žugec, P. Cortés Giraldo, Miguel Antonio ![]() ![]() ![]() ![]() ![]() ![]() ![]() Lozano Leyva, Manuel Luis ![]() ![]() ![]() ![]() ![]() ![]() Praena Rodríguez, Javier Quesada Molina, José Manuel ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2014 |
Fecha de depósito | 2017-04-05 |
Publicado en |
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Resumen | The cross section of the 62Ni(n,γ) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n-TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron energy ... The cross section of the 62Ni(n,γ) reaction was measured with the time-of-flight technique at the neutron time-of-flight facility n-TOF at CERN. Capture kernels of 42 resonances were analyzed up to 200 keV neutron energy and Maxwellian averaged cross sections (MACS) from kT= 5-100 keV were calculated. With a total uncertainty of 4.5%, the stellar cross section is in excellent agreement with the the KADoNiS compilation at kT=30 keV, while being systematically lower up to a factor of 1.6 at higher stellar temperatures. The cross section of the 63Ni(n,γ) reaction was measured for the first time at n-TOF. We determined unresolved cross sections from 10 to 270 keV with a systematic uncertainty of 17%. These results provide fundamental constraints on s-process production of heavier species, especially the production of Cu in massive stars, which serve as the dominant source of Cu in the solar system. |
Cita | Lederer Woods, C., Massimi, C., Berthoumieux, E., Colonna, N., Dressler, R., Guerrero Sánchez, C.,...,Quesada Molina, J.M. (2014). 62 Ni(n, γ) and 63 Ni(n, γ) cross sections measured at the n_TOF facility at CERN. Physical Review C - Nuclear Physics, 89 (2), 025810-1-025810-11. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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62ni.pdf | 1.287Mb | ![]() | Ver/ | |
Erratum.pdf | 93.07Kb | ![]() | Ver/ | Erratum |