Nuclear level density and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>γ</mml:mi></mml:math>-ray strength function of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ni</mml:mi><mml:mprescripts/
Proton-<a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mi>γ</a:mi></a:math> coincidences from <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mrow><b:mo>(</b:mo><b:mi>d</b:mi><b:mo>,</b:mo><b:mi>p</b:mi><b:mo>)</b:mo></b:mrow></b:math> reactions between a <c:math xmlns:c="http://www.w3.org/1998/Math/MathML"><c:mmultiscripts><c:mi>Ni</c:mi><c:mprescripts/><c:none/><c:mn>66</c:mn></c:mmultiscripts></c:math> beam and a deuterated polyethylene target have been analyzed with the inverse-Oslo method to find the nuclear level density (NLD) and <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mi>γ</d:mi></d:math>-ray strength function (<e:math xmlns:e="http://www.w3.org/1998/Math/MathML"><e:mrow><e:mi>γ</e:mi><e:mi>SF</e:mi></e:mrow></e:math>) of <f:math xmlns:f="http://www.w3.org/1998/Math/MathML"><f:mmultiscripts><f:mi>Ni</f:mi><f:mprescripts/><f:none/><f:mn>67</f:mn></f:mmultiscripts></f:math>. The <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"><g:mrow><g:mmultiscripts><g:mi>Ni</g:mi><g:mprescripts/><g:none/><g:mn>66</g:mn></g:mmultiscripts><g:mo>(</g:mo><g:mi>n</g:mi><g:mo>,</g:mo><g:mi>γ</g:mi><g:mo>)</g:mo></g:mrow></g:math> capture cross section has been calculated using the Hauser-Feshbach model in using the measured NLD and <h:math xmlns:h="http://www.w3.org/1998/Math/MathML"><h:mrow><h:mi>γ</h:mi><h:mi>SF</h:mi></h:mrow></h:math> as constraints. The results confirm that the <i:math xmlns:i="http://www.w3.org/1998/Math/MathML"><i:mrow><i:mmultiscripts><i:mi>Ni</i:mi><i:mprescripts/><i:none/><i:mn>66</i:mn></i:mmultiscripts><i:mo>(</i:mo><i:mi>n</i:mi><i:mo>,</i:mo><i:mi>γ</i:mi><i:mo>)</i:mo></i:mrow></i:math> 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 <j:math xmlns:j="http://www.w3.org/1998/Math/MathML"><j:mi>i</j:mi></j:math>-process nucleosynthesis.
Authors
- P. Reiter (ORCID: https://orcid.org/0000-0003-3016-8210)
- K. Arnswald
- J. Ojala (ORCID: https://orcid.org/0000-0002-3889-5837)
- F. L. Bello Garrote (ORCID: https://orcid.org/0000-0003-3926-7119)
- M. Wiedeking (ORCID: https://orcid.org/0000-0003-4983-3882)
- S. N. T. Majola (ORCID: https://orcid.org/0000-0003-3614-7795)
- S. Goriely
- N. Warr (ORCID: https://orcid.org/0000-0001-7275-1063)
- M. Seidlitz
- D. M. Cox (ORCID: https://orcid.org/0000-0002-2790-8348)
- K. Abrahams
- A. Görgen (ORCID: https://orcid.org/0000-0003-1916-9941)
- B. V. Kheswa (ORCID: https://orcid.org/0000-0003-3044-094X)
- G. Rainovski (ORCID: https://orcid.org/0000-0002-1729-0249)
- L. P. Gaffney (ORCID: https://orcid.org/0000-0002-2938-3696)
- K. L. Malatji
- J. Cederkäll (ORCID: https://orcid.org/0000-0001-7250-0838)
- F. Zeiser
- D. L. Bleuel (ORCID: https://orcid.org/0000-0003-2792-0715)
- S. Siem
- A. Illana (ORCID: https://orcid.org/0000-0003-0274-3388)
- G. M. Tveten (ORCID: https://orcid.org/0000-0002-6942-8254)
- L. Siess (ORCID: https://orcid.org/0000-0001-6008-1103)
- V. W. Ingeberg
- J. Pakarinen (ORCID: https://orcid.org/0000-0001-8944-8757)
- M. von Schmid (ORCID: https://orcid.org/0000-0002-5279-1823)
- A. Choplin (ORCID: https://orcid.org/0000-0001-6159-8470)
- T. L. Christoffersen
- T. Kröll (ORCID: https://orcid.org/0000-0001-7151-9190)
- H. De Witte
- Peter G. Jones (ORCID: https://orcid.org/0000-0001-7480-6603)
- C. Henrich
Institutions
- Lawrence Livermore National Laboratory (US)
- Université Libre de Bruxelles (BE)
- University of Helsinki (FI)
- Lawrence Berkeley National Laboratory (US)
- University of Cologne (DE)
- University of Oslo (NO)
- Lund University (SE)
- University of the Witwatersrand (ZA)
- Stellenbosch University (ZA)
- Technische Universität Darmstadt (DE)
- iThemba Laboratory (ZA)
- NORCE Research AS (NO)
- Sofia University "St. Kliment Ohridski" (BG)
- European Organization for Nuclear Research (CH)
- University of the Western Cape (ZA)
- University of Jyväskylä (FI)
- KU Leuven (BE)
Publication Details
- Journal
- Physical review. C
- Published
- 2025-01-16
- DOI
- https://doi.org/10.1103/physrevc.111.015803
- Citations
- 7
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 13.09
Funders
- U.S. Department of Energy
- CERN
- National Research Foundation
- Bundesministerium für Bildung und Forschung
- Fonds De La Recherche Scientifique - FNRS
- Fonds Wetenschappelijk Onderzoek
- KU Leuven
- Norges Forskningsråd
- Ministry of Education and Science
- Vlaamse regering
- Office of Science
- Horizon 2020 Framework Programme
- Nuclear Physics
- Lawrence Livermore National Laboratory
- Lawrence Berkeley National Laboratory