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June 10, 2026The European Physical Journal AOpen Access

Evolution of the nuclear structure in neutron-rich Cu isotopes: first spectroscopy of odd-odd ⁷⁴Cu and ⁷⁶Cu

L. G. Pedersen E. Sahin A. Görgen F. L. Bello Garrote Y. Tsunoda T. Otsuka M. Niikura S. Nishimura Z. Xu H Baba G. Benzoni F. Browne A. M. Bruce S. Ceruti F. C. L. Crespi R. Daido G. de Angelis M. C. Delattre Zs. Dombradi P. Doornenbal Y. Fang S Franchoo G. Gey A. Gottardo T. Isobe P. R. John H. S. Jung I. Kojouharov T. Kubo N. Kurz I. Kuti Z. Li G. Lorusso I. Matea K. Matsui D. Mengoni T. Miyazaki V. Modamio S. Momiyama A I Morales P. Morfouace D. R. Napoli F. Naqvi H. Nishibata A. Odahara R. Orlandi Z. Patel S. Rice H. Sakurai H. Schaffner L. Sinclair P. -A. Söderström D. Sohler I.G. Stefan T. Sumikama D. Suzuki R. Taniuchi J. Taprogge Z. Vajta J.J. Valiente Dobón H. Watanabe V. Werner Jianmin Wu A. Yagi M. Yalçınkaya R Yokoyama K. Yoshinaga

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Key Points

This research aims to investigate the excited states of neutron-rich odd-odd Cu isotopes, specifically $$^{74}$$Cu and $$^{76}$$Cu.
Performed spectroscopic study following beta decay of $$^{74}$$Ni and $$^{76}$$Ni.
Utilized the EURICA setup and BigRIPS separator at RIKEN Nishina Center.
Analyzed gamma-gamma coincidences and performed large-scale Monte Carlo shell-model calculations.
No evidence of isomeric states in either nucleus based on beta-gamma time correlations.
Low-lying states interpreted as spin multiplets from particular orbital configurations.
Experimental findings align closely with theoretical predictions using the A3DA-m interaction model.

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Implication

Reveals excited states in odd-odd Cu isotopes, suggesting new insights into nuclear evolution.

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Cite This Study

Pedersen et al. (2026) studied this question.

synapsesocial.com/papers/6a2ba31a8101cf8926f01db1 https://doi.org/10.1140/epja/s10050-026-01873-w

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