2004/06/30 by H. Nassar, M. Paul, I. Ahmad +30 · 1 citation
Physics and Astronomy · #Astronomical and nuclear sciences #Nuclear Physics and Applications #Nuclear physics research studies #nucl-ex
paper · pdf · doi:10.1103/physrevlett.94.092504
published as Phys.Rev.Lett. 94 (2005) 092504 · 4 pages, 3 figures, revised paper, published PRL 94, 092504 (2005)
openalex publication_date 2005/03/11 · arxiv created 2005/03/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The 62Ni(n,\ensuremathγ)63Ni(t1/2=100\ifmmode±\else\textpm\fi2 yr) 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\ifmmode±\else\textpm\fi2.8 mb, fairly consistent with a recent calculation, affects the calculated net yield of 62Ni itself and the whole distribution of nuclei with 62<A<90 produced by the weak s process in massive stars.