Neutron capture cross section ofNi62ats-process energies

Erratum:Ni62(n,γ)andNi63(nLederer1, Massimi2, Berthoumieux3 et al. 2015Phys. Rev. CSelf Cite5020View full textAdd to dashboardCite

“…6. For kT < 30 keV, the n_TOF data are in agreement with the results of Alpizar-Vicente et al [19]. At 25 keV and 30 keV, our MACS is in excellent agreement with activation measurements of Nassar et al [20] and Dillmann et al [22], while being significantly lower than a previous time-of-flight measurement by Tomyo et al [18].…”

“…At 25 keV and 30 keV, our MACS is in excellent agreement with activation measurements of Nassar et al [20] and Dillmann et al [22], while being significantly lower than a previous time-of-flight measurement by Tomyo et al [18]. Towards higher kT values, our data start to deviate from the results of Alpizar-Vicente et al [19], being systematically lower up to a factor of 1.8. As investigated by Monte Carlo simulations, missing levels because of high background at high neutron energies cannot account for that difference.…”

“…[15]. In this section, [19], Nassar et al [20], Dillmann et al [22], and Tomyo et al [18]). The results obtained with data from the JENDL-4.0 evaluation (dashed line, [27]) and the recommended MACS values of the KADONIS compilation (solid line, [51]) are included as well.…”

“…This paper describes the measurement and data analysis of the (n,γ ) experiments on 62 Ni and 63 Ni. Current data on 62 Ni(n,γ ) include time-of-flight measurements [16][17][18][19] as well as activation measurements to directly determine the MACS at kT = 25 keV [20][21][22]. Neutron capture resonances have been analyzed over a large energy range (E n < 200 keV) by Beer and Spencer [17], while there are a few other measurements investigating only the first strong = 0 resonance at 4.6 keV [23][24][25].…”

Thesprocess: Nuclear physics, stellar models, and observations

“…A prominent example is the case of the 62 Ni(n, γ) 63 Ni cross section, where the effect was discussed first Guber, 2002, 2005;Rauscher et al, 2002). This problem has triggered a series of experimental studies on that isotope (Alpizar-Vicente et al, 2008;Lederer et al, 2010;Nassar et al, 2005;Tomyo et al, 2005) and on other key reactions of the weak s process between Fe and Sr, which could be considerably improved (e.g. Heil et al, 2008b,c).…”