Abstract
Although the γ-ray line emitting 25Mg(p,pγ1–0)25Mg (Eγ1–0 = 585 keV) reaction has been already studied for its relevance in nuclear structure and in material, biomedical, environmental and cultural heritage sciences, significant discrepancies exist in the data. The present paper reports on a new set of cross-section measurements for this reaction in the energy range Elab = 869–4017 keV. The 585 keV γ-rays were detected at θlab = 130° using an HPGe detector. The cross-sections were measured with a small energy step leading to a clear definition of resonances, an aspect that is absent in most previous cross-sections data. Validation of the measured results was made against thick target yields. Several resonances were found for 25Mg(p,pγ1–0)25Mg, which correspond to new 26Al levels, still not listed in nuclear databases.
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This manuscript has associated data in a data repository. [Authors’ comment: Data are available on request from the authors.]
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Acknowledgements
The authors acknowledge LIBPhys (UID/FIS/04559/2021) and NOVA.ID.FCT. The authors acknowledge the collaboration with the Laboratory for Underground Nuclear Astrophysics (LUNA), located at the Laboratori Nazionali del Gran Sasso (LNGS), Italy, for providing the 25Mg enriched target [20].
Funding
This research was funded by Fundação para a Ciência e a Tecnologia grants number UID/FIS/04559/2021 (LIBPhys).
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Communicated by Anu Kankainen.
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Cruz, J., Fonseca, M., Mateus, R. et al. Cross-sections of the gamma-producing 25Mg(p,pγ1-0)25Mg nuclear reaction at Elab = 870–4020 keV. Eur. Phys. J. A 58, 128 (2022). https://doi.org/10.1140/epja/s10050-022-00780-0
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DOI: https://doi.org/10.1140/epja/s10050-022-00780-0