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
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creator 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
description 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_str_mv 10.48550/arxiv.nucl-ex/0406009
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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&lt;A &lt;90 produced by the weak s-process in massive stars.</abstract><doi>10.48550/arxiv.nucl-ex/0406009</doi><oa>free_for_read</oa></addata></record>
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title The stellar (n,gamma) cross section of 62Ni
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