The stellar (n,gamma) cross section of 62Ni

Phys.Rev.Lett. 94 (2005) 092504 The 62Ni(n,gamma)63Ni(t_1/2=100+-2 yrs) reaction plays an important role in the control of the flow path of the slow neutron-capture (s-) nucleosynthesis process. We have measured for the first time the total cross section of this reaction for a quasi-Maxwellian (kT =...

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Hauptverfasser:	Nassar, H, Paul, M, Ahmad, I, Berkovits, D, Bettan, M, Collon, P, Dababneh, S, Ghelberg, S, Greene, J. P, Heger, A, Heil, M, Henderson, D. J, Jiang, C. L, Kaeppeler, F, Koivisto, H, O'Brien, S, Pardo, R. C, Patronis, N, Pennington, T, Plag, R, Rehm, K. E, Reifarth, R, Scott, R, Sinha, S, Tang, X, Vondrasek, R
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - Nuclear Experiment
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Zusammenfassung:	Phys.Rev.Lett. 94 (2005) 092504 The 62Ni(n,gamma)63Ni(t_1/2=100+-2 yrs) reaction plays an important role in the control of the flow path of the slow neutron-capture (s-) nucleosynthesis process. We have measured for the first time the total cross section of this reaction for a quasi-Maxwellian (kT = 25 keV) neutron flux. The measurement was performed by fast-neutron activation, combined with accelerator mass spectrometry to detect directly the 63Ni product nuclei. The experimental value of 28.4+-2.8 mb, fairly consistent with a recent theoretical estimate, affects the calculated net yield of 62Ni itself and the whole distribution of nuclei with 62
DOI:	10.48550/arxiv.nucl-ex/0406009