Observation of Ni54: Cross-conjugate symmetry in f7/2 mirror energy differences

A. Gadea, S. M. Lenzi, S. Lunardi, N. Mǎrginean, A. P. Zuker, G. De Angelis, M. Axiotis, T. Martínez, D. R. Napoli, E. Farnea, R. Menegazzo, P. Pavan, C. A. Ur, D. Bazzacco, R. Venturelli, P. Kleinheinz, P. Bednarczyk, D. Curien, O. Dorvaux, J. NybergH. Grawe, M. Górska, M. Palacz, K. Lagergren, L. Milechina, J. Ekman, D. Rudolph, C. Andreoiu, M. A. Bentley, W. Gelletly, B. Rubio, A. Algora, E. Nacher, L. Caballero, M. Trotta, M. Moszyński

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Gamma decays from excited states up to Jπ=6+ in the N=Z-2 nucleus Ni54 have been identified for the first time. Level energies are compared with those of the isobars Co54 and Fe54 and of the cross-conjugate nuclei of mass A=42. The good but puzzling f7/2 cross-conjugate symmetry in mirror and triplet energy differences is analyzed. Shell model calculations reproduce the new data but the necessary nuclear charge-dependent phenomenology is not fully explained by modern nucleon-nucleon potentials.

Original languageEnglish
Article number152501
JournalPhysical review letters
Issue number15
Publication statusPublished - Jan 1 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Gadea, A., Lenzi, S. M., Lunardi, S., Mǎrginean, N., Zuker, A. P., De Angelis, G., Axiotis, M., Martínez, T., Napoli, D. R., Farnea, E., Menegazzo, R., Pavan, P., Ur, C. A., Bazzacco, D., Venturelli, R., Kleinheinz, P., Bednarczyk, P., Curien, D., Dorvaux, O., ... Moszyński, M. (2006). Observation of Ni54: Cross-conjugate symmetry in f7/2 mirror energy differences. Physical review letters, 97(15), [152501]. https://doi.org/10.1103/PhysRevLett.97.152501