Nuclear level density and γ -ray strength function of Ni 67 and the impact on the i process
| dc.contributor.author | Abrahams, Kenzo J | |
| dc.contributor.author | Ingeberg, Vetle Wegner | |
| dc.contributor.author | Siem, Sunniva | |
| dc.date.accessioned | 2026-01-13T07:27:55Z | |
| dc.date.available | 2026-01-13T07:27:55Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | Proton-γ coincidences from (d,p) reactions between a Ni66 beam and a deuterated polyethylene target have been analyzed with the inverse-Oslo method to find the nuclear level density (NLD) and γ-ray strength function (γSF) of Ni67. The Ni66(n,γ) capture cross section has been calculated using the Hauser-Feshbach model in TALYS using the measured NLD and γSF as constraints. The results confirm that the Ni66(n,γ) reaction acts as a bottleneck when relying on one-zone nucleosynthesis calculations. However, the impact of this reaction is strongly dampened in multizone models of low-metallicity AGB stars experiencing i-process nucleosynthesis. | |
| dc.identifier.citation | Ingeberg, V.W., Siem, S., Wiedeking, M., Choplin, A., Goriely, S., Siess, L., Abrahams, K.J., Arnswald, K., Bello Garrote, F., Bleuel, D.L. and Cederkäll, J., 2025. Nuclear level density and γ-ray strength function of Ni 67 and the impact on the i process. Physical Review C, 111(1), p.015803. | |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevC.111.015803 | |
| dc.identifier.uri | https://hdl.handle.net/10566/21686 | |
| dc.language.iso | en | |
| dc.publisher | American Physical Society | |
| dc.subject | Nuclear | |
| dc.subject | Level Density | |
| dc.subject | Nuclear Reaction Rates | |
| dc.subject | Gamma Ray Strength Functions | |
| dc.subject | Nuclear Astrophysics | |
| dc.title | Nuclear level density and γ -ray strength function of Ni 67 and the impact on the i process | |
| dc.type | Article |