| Preprint | |
| Report number | arXiv:2307.07153 |
| Title | Nuclear Level Density and $\gamma$-ray Strength Function of $^{67}\mathrm{Ni}$ and the impact on the i-process |
| Author(s) |
Ingeberg, V.W. (Oslo U.) ; Siem, S. (Oslo U.) ; Wiedeking, M. (LBNL, NSD ; iThemba LABS ; U. Witwatersrand, Johannesburg, Sch. Phys.) ; Choplin, A. (Brussels U., IAA) ; Goriely, S. (Brussels U., IAA) ; Siess, L. (Brussels U., IAA) ; Abrahams, K.J. (Western Cape U.) ; Arnswald, K. (Koln, Fachhochschule) ; Bello Garrote, F. (Oslo U.) ; Bleuel, D.L. (LLNL, Livermore) ; Cederkäll, J. (Lund U. ; CERN) ; Christoffersen, T.L. (Oslo U.) ; Cox, D.M. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; De Witte, H. (KU Leuven, Dept. Phys. Astron.) ; Gaffney, L.P. (CERN ; Liverpool U.) ; Görgen, A. (Oslo U.) ; Henrich, C. (Darmstadt, Tech. Hochsch.) ; Illana, A. (KU Leuven, Dept. Phys. Astron. ; UCM, Somosaguas) ; Jones, P. (iThemba LABS) ; Kheswa, B.V. (Oslo U.) ; Kröll, T. (Darmstadt, Tech. Hochsch.) ; Majola, S.N.T. (iThemba LABS ; Johannesburg U.) ; Malatji, K.L. (iThemba LABS ; Stellenbosch U.) ; Ojala, J. (Jyvaskyla U. ; Helsinki Inst. of Phys. ; Liverpool U.) ; Pakarinen, J. (Jyvaskyla U. ; Helsinki Inst. of Phys.) ; Rainovski, G. (Sofiya U.) ; Reiter, P. (Koln, Fachhochschule) ; von Schmid, M. (Darmstadt, Tech. Hochsch.) ; Seidlitz, M. (Koln, Fachhochschule) ; Tveten, G.M. (Oslo U.) ; Warr, N. (Koln, Fachhochschule) ; Zeiser, F. (Oslo U.) |
| Imprint | 2023-07-14 |
| Number of pages | 16 |
| Note | Submitted to Phys. Rev. C |
| Subject category | nucl-th ; Nuclear Physics - Theory ; astro-ph.SR ; Astrophysics and Astronomy ; nucl-ex ; Nuclear Physics - Experiment |
| Accelerator/Facility, Experiment | CERN ISOLDE |
| Abstract | Proton-$\gamma$ coincidences from $(\mathrm{d},\mathrm{p})$ reactions between a $^{66}\mathrm{Ni}$ beam and a deuterated polyethylene target have been analyzed with the inverse-Oslo method to find the nuclear level density (NLD) and $\gamma$-ray strength function ($\gamma$SF) of $^{67}\mathrm{Ni}$. The $^{66}\mathrm{Ni}(n,\gamma)$ capture cross section has been calculated using the Hauser-Feshbach model in TALYS using the measured NLD and $\gamma$SF as constraints. The results confirm that the $^{66}\mathrm{Ni}(n,\gamma)$ reaction acts as a bottleneck when relying on one-zone nucleosynthesis calculations. However, the impact of this reaction is strongly dampened in multi-zone models of low-metallicity AGB stars experiencing i-process nucleosynthesis. |
| Other source | Inspire |
| Copyright/License | preprint: (License: CC BY-NC-ND 4.0) |
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