Title: 62Ni(n, gamma) and 63Ni(n, gamma) cross sections measured at the n_TOF facility at CERN
Authors: LEDERER C.MASSIMI C.BERTHOUMIEUX E.COLONNA N.DRESSLER R.GUERRERO C.GUNSING F.KÄPPELER F.KIVEL NikoPIGNATARI M.REIFARTH R.SCHUMANN D.WALLNER A.ANDRIAMONJE S.ANDRZEJEWSKI J.AUDOUIN L.Becvár F.CALVINO F.CANO-OTT D.CORTES G.DOMINGO-PARDO C.DURAN I.ELEFTHERIADIS C.FERRARI A.GONCALVES I.GONZALEZ-ROMERO E.GRIESMAYER E.JERICHA E.KADI Y.KARADIMOS D.KRTICKA M.LEEB H.MARGANIEC J.MASTINU P.MENGONI A.MILAZZO P. M.PARADELA C.PAVLIK A.PLOMPEN ArjanQUESADA J.RAUSCHER T.RUBBIA C.TAGLIENTE G.TAIN J. L.TASSAN-GOT L.VANNINI G.VAZ P.VENTURA A.VLASTOU R.BECARES V.BILLOWES J.BOCCONE V.BOSNAR D.BRUGGER M.CARRAPICO C.CERUTTI F.CHIN M.CORTES-GIRALDO M. A.DZYSIUK N.FRAVAL K.GARCIA A. R.GIUBRONE G.GOMEZ-HORNILLOS M. B.JENKINS D. G.TARRIO D.VALENTA S.VARIALE V.VERSACI R.VERMEULEN M.WARE T.WEIGAND M.WRIGHT T. J.ZUGEC P.BARBAGALLO M.ALTSTADT S.BELLONI F.BERTHIER B.CALVIANI M.CHIAVERI E.LANGER C.LEONG L. S.LOSITO R.GANESAN S.MANOUSOS AMARTINEZ T.MASTROMARCO M.MEAZE M.MENDOZA E.MINGRONE F.MIREA M.MONDELAERS WillyPERKOWSKI J.PRAENA J.RIEGO A.ROMAN F.SARMENTO R.SCHILLEBEECKX PeterSCHMIDT S.Dillmann IFERNANDEZ-ORDONEZ M.GRAMEGNA F.HARRISOPULOS S.HEIL M.IOANNIDES K.KORSCHINEK G.LEBBOS E.LOZANO M.MARRONE S.PLAG R.TSINGANIS A.TLUSTOS L.VLACHOUDIS V.WEISS C.KROLL J.GURUSAMY P.
Citation: PHYSICAL REVIEW C vol. 89 no. 2 p. 025810
Publisher: AMER PHYSICAL SOC
Publication Year: 2014
JRC N°: JRC87297
ISSN: 0556-2813
URI: http://link.aps.org/doi/10.1103/PhysRevC.89.025810
http://dx.doi.org/10.1103/PhysRevC.89.025810
http://publications.jrc.ec.europa.eu/repository/handle/JRC87297
DOI: 10.1103/PhysRevC.89.025810
Type: Articles in periodicals and books
Abstract: The cross section of the 62Ni(n, gamma) 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 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, gamma) 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.
JRC Directorate:Health, Consumers and Reference Materials

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