Observation of Ni-54: Cross-conjugate symmetry in f(7/2) mirror energy differences
2006 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 97, no 15, 152501- p.Article in journal (Refereed) Published
Gamma decays from excited states up to J(pi)=6(+) in the N=Z-2 nucleus Ni-54 have been identified for the first time. Level energies are compared with those of the isobars Co-54 and Fe-54 and of the cross-conjugate nuclei of mass A=42. The good but puzzling f(7/2) 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.
Place, publisher, year, edition, pages
2006. Vol. 97, no 15, 152501- p.
IdentifiersURN: urn:nbn:se:kth:diva-37520DOI: 10.1103/PhysRevLett.97.152501ISI: 000241247700025ScopusID: 2-s2.0-33749646925OAI: oai:DiVA.org:kth-37520DiVA: diva2:434177
QC 201108122011-08-122011-08-122012-09-19Bibliographically approved