RT Journal Article
T1 The 76Cu conundrum remains unsolved
A1 Olaizola, Bruno
A1 Illana Sisón, Andrés
A1 Fraile Prieto, Luis Mario
A1 Ibáñez García, Paula Beatriz
A1 Llanos Expósito, Marcos
A1 Martínez Nouvilas, Víctor
A1 Udías Moinelo, José Manuel
A1 Vedia Fernández, María Victoria
A1 Yue, Z.
A1 otros, ...
AB Near the doubly-magic nucleus 78Ni (𝑍 = 28, 𝑁 = 50), there has been a decades-long debate on the existence of a long-lived isomer in 76Cu. A recent mass measurement claimed to have settled the debate, by measuring the energy of the isomer and shedding light on the structure of the nucleus. In this work, we present new, moreaccurate, and precise values of the half-lives of the isomeric and ground states in 76Cu. Our findings suggest that both states have very similar half-lives, in the 600–700 ms range, in disagreement with the literature values, implying that they cannot be differentiated by their decay curves. These results raise more questions than theyanswer, reopening the debate and showing that the structures in 76Cu are still not fully understood.
PB Elsevier
SN 0370-2693
YR 2025
FD 2025-05-09
LK https://hdl.handle.net/20.500.14352/122528
UL https://hdl.handle.net/20.500.14352/122528
LA eng
NO [1] B. Olaizola, A. Illana, J. Benito, D.P. Suárez-Bustamante, G. Del Piccolo, A. Algora, B. Andel, A.N. Andreyev, M. Araszkiewicz, Y. Ayyad, R.A. Bark, T. Berry, M.J.G. Borge, K. Chrysalidis, T.E. Cocolios, C. Costache, J.G. Cubiss, P. Van Duppen, Z. Favier, L.M. Fraile, H.O.U. Fynbo, F. Galtarossa, G. Georgiev, P.T. Greenless, R. Grzywacz, L.J. Harkness-Brennan, R. Heinke, M. Huyse, P. Ibañez, K. Johnston, P.M. Jones, D.S. Judson, J. Konki, A. Korgul, U. Köster, J. Kurcewicz, M. Labiche, I. Lazarus, R. Lică, M. Llanos-Expósito, M. Madurga, N. Marginean, R. Marginean, B.A. Marsh, C. Mihai, R.E. Mihai, J.R. Murias, E. Nácher, C. Neacsu, A. Negret, V.M. Nouvilas, J. Ojala, J.N. Orce, C.A.A. Page, R.D. Page, J. Pakarinen, J. Papadakis, S. Pascu, A. Perea, M. Piersa-Siłkowska, A.M. Plaza, Zs. Podolyák, W. Poklepa, V. Pucknell, P. Rahkila, C. Raison, E. Rapisarda, K. Rezynkina, F. Rotaru, K. Schomacker, M. Siciliano, C. Sotty, M. Stryjczyk, O. Tengblad, J.M. Udías, V. Vedia, S. Viñals, R. Wadsworth, N. Warr, H. De Witte, D. Yates, Z. Yue, The 76Cu conundrum remains unsolved, Physics Letters B 866 (2025) 139551. https://doi.org/10.1016/j.physletb.2025.139551.
NO "This work was supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 654002 (ENSAR2). BO acknowledges funding from the Next Generation EU funds RYC2021-031494-I and PID2022-140162NB-I00 projects. AI acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 847635. JB also acknowledges the support from the Margarita Salas Fellowship, CT31/21, at the Complutense University of Madrid funded by the Spanish MIU and European Union-Next-Generation funds. This work was supported by Spanish MCIN/AEI/10.13039/501100011033 under grant PID2021-126998OB-I00 and by Grupo de Física Nuclear-UCM Ref. 910059, Ministerio de Ciencia e Innovación PID2022-138297NB-C21, Comunitat Valenciana Prometeo CIPROM/2022/9 and Severo Ochoa CEX2023-001292-S grants, by the Polish National Science Center under Grant No. 2020/39/B/ST2/02346, by the Polish Ministry of Science and Higher Education under contract 2021/WK/07, by the German BMBF under contract 05P21PKCI1 and Verbundprojekt 05P2021, by the Slovak Research and Development Agency (Contract No. APVV-22-0282), by the Slovak grant agency VEGA (Contract No. 1/0651/21), by the Academy of Finland project No. 354968, by the United Kingdom Science and Technology Facilities Council through the grants ST/P004598/1, ST/V001027/1, andST/V001035/1, by the Romanian IFA grant CERN/ISOLDE and Nucleu project No. PN 23 21 01 02, and by the Research Foundation Flanders (FWO, Belgium), the BOF KU Leuven (C14/22/104), and the BOF KU Leuven (GOA/2015/010)."
NO European Commission
NO Universidad Complutense de Madrid
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Comunitat Valenciana
NO Polish National Science Center
NO Polish Ministry of Science and Higher Education
NO Federal Ministry of Research, Technology and Space (Alemania)
NO Slovak Research and Development Agency
NO Academy of Finland
NO United Kingdom Science and Technology Facilities Council
NO Institute of Atomic Physics (Rumanía)
NO Research Foundation Flanders
NO KU Leuven Internal Funds (Bélgica)
DS Docta Complutense
RD 12 abr 2026