62Ni(n,γ) and 63Ni(n,γ) cross sections measured at the n_TOF facility at CERN

Lederer, C.; Massimi, Cristian; Berthoumieux, Eric; Colonna, Nicola; Dressler, Rugard; Guerrero, Carlos; Gunsing, Frank; Käppeler, F. (Franz); Kivel, Niko; Pignatari, Marco; Reifarth, René; Schumann, Dorothea; Wallner, Anton; Altstadt, S.; Andriamonje, Samuel, 1945-; Andrzejewski, Józef, 1950-; Audouin, Laurent, 1974-; Barbagallo, Max; Bécares, V. (Vincente); Bečvář, František; Belloni, Fabio; Berthier, Bernard; Billowes, Jonathan; Boccone, V.; Bosnar, Damir, 1961-; Brugger, Markus, 1975-; Calviani, Marco; Calvino, Francisco; Cano-Ott, Daniel; Carrapiço, C.; Cerutti, Francesco; Chiaveri, Enrico; Chin, M.; Cortes, G.; Cortes-Giraldo, Miguel Antonio; Dillmann, Iris; Domingo-Pardo, Cesar; Durán, Ignacio; Dzysiuk, Nataliia; Eleftheriadis, Christos; Fernández Ordóñez, Manuel; Ferrari, Anna; Fraval, Kevin; Ganesan, Srinivasan; Garcia, A. R.; Giubrone, Giuseppe; Belén Gómez Hornillos, M.; Gonçalves, Isabella Maria Ferro Periera; Gonzalez-Romero, Enrique; Gramegna, Fabiana; Griesmayer, Erich; Gurusamy, P.; Harrisopulos, S.; Heil, Michael; Ioannides, K.; Jenkins, David G.; Jericha, Erwin; Kadi, Yacine; Karadimos, Dimitrios; Korschinek, Gunther; Krtička, Milan; Kroll, Jiří; Langer, Christoph; Lebbos, E.; Leong, Lou Sai; Losito, Roberto; Lozano, Manuel; Manousos, Athanasios; Marganiec, Justyna; Marrone, Stefano; Martinez, T.; Mastinu, Pierfrancesco; Mastromarco, Mario; Meaze, Moinul; Mendoza, Emilio; Mengoni, Alberto; Milazzo, Paolo Maria; Mingrone, Frederica; Mirea, Mihail; Mondalaers, Wim; Paradela, Carlos; Pavlik, Andreas; Perkowski, Jarosław; Plag, Ralf; Plompen, Arjan; Praena, Javier; Quesada, Jose Manuel; Rauscher, Thomas; Riego, A.; Roman, F.; Rubbia, Carlo; Sarmento, Raul; Schillebeeckx, Peter; Schmidt, Stefan (Astrophysicist); Tagliente, Giuseppe; Tain, Jose Luis; Tarrio, Diego; Tassan-Got, L.; Tsinganis, Andrea; Tlustos, Lukas; Valenta, Stanislav; Vanninni, Gianni; Variale, Vincenze; Vaz, Pedro; Ventura, Alberto; Vermeulen, Mark J.; Versaci, Roberto; Vlachoudis, Vasilis; Vlastou, Rosa; Ware, Tim; Weigand, Mario; Weiß, C.; Wright, Tobias J.; Žugec, Petar; Leeb, Helmut

62Ni(n,γ)
2014

Journal article


Rights
©2015 American Physical Society
Abstract

The cross section of the Ni62(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 Ni63(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.

Publisher
The University of Hull
Peer reviewed
Yes
Language
English
Extent
596 KB
Identifier
hull:13037

Journal

Journal title
Physical review c
Publication date
2014
Publisher
American Physical Society
DOI
http://dx.doi.org/10.1103/PhysRevC.89.025810
ISSN (Print)
0556-2813
ISSN (Electronic)
1089-490X
Volume
89
Issue
2
Notes

This is an author prepared version of an article published in Physical review c, 2014, v.89 issue 2.

Links
Published article
Erratum
QR Code