title: Observation of 54Ni: cross-conjugate symmetry in f7/2 mirror energy differences.
abstract: Gamma decays from excited states up to Jpi=6+ in the N=Z-2 nucleus 54Ni have been identified for the first time. Level energies are compared with those of the isobars 54Co and 54Fe and of the cross-conjugate nuclei of mass A=42. The good but puzzling f7/ 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.
authors.affiliation: INFN Laboratori Nazionali di Legnaro, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Gadea
authors.forename: S M
authors.initials: SM
authors.lastname: Lenzi
authors.forename: S
authors.initials: S
authors.lastname: Lunardi
authors.forename: N
authors.initials: N
authors.lastname: Mărginean
authors.forename: A P
authors.initials: AP
authors.lastname: Zuker
authors.forename: G
authors.initials: G
authors.lastname: de Angelis
authors.forename: M
authors.initials: M
authors.lastname: Axiotis
authors.forename: T
authors.initials: T
authors.lastname: Martínez
authors.forename: D R
authors.initials: DR
authors.lastname: Napoli
authors.forename: E
authors.initials: E
authors.lastname: Farnea
authors.forename: R
authors.initials: R
authors.lastname: Menegazzo
authors.forename: P
authors.initials: P
authors.lastname: Pavan
authors.forename: C A
authors.initials: CA
authors.lastname: Ur
authors.forename: D
authors.initials: D
authors.lastname: Bazzacco
authors.forename: R
authors.initials: R
authors.lastname: Venturelli
authors.forename: P
authors.initials: P
authors.lastname: Kleinheinz
authors.forename: P
authors.initials: P
authors.lastname: Bednarczyk
authors.forename: D
authors.initials: D
authors.lastname: Curien
authors.forename: O
authors.initials: O
authors.lastname: Dorvaux
authors.forename: J
authors.initials: J
authors.lastname: Nyberg
authors.forename: H
authors.initials: H
authors.lastname: Grawe
authors.forename: M
authors.initials: M
authors.lastname: Górska
authors.forename: M
authors.initials: M
authors.lastname: Palacz
authors.forename: K
authors.initials: K
authors.lastname: Lagergren
authors.forename: L
authors.initials: L
authors.lastname: Milechina
authors.forename: J
authors.initials: J
authors.lastname: Ekman
authors.forename: D
authors.initials: D
authors.lastname: Rudolph
authors.forename: C
authors.initials: C
authors.lastname: Andreoiu
authors.forename: M A
authors.initials: MA
authors.lastname: Bentley
authors.forename: W
authors.initials: W
authors.lastname: Gelletly
authors.forename: B
authors.initials: B
authors.lastname: Rubio
authors.forename: A
authors.initials: A
authors.lastname: Algora
authors.forename: E
authors.initials: E
authors.lastname: Nacher
authors.forename: L
authors.initials: L
authors.lastname: Caballero
authors.forename: M
authors.initials: M
authors.lastname: Trotta
authors.forename: M
authors.initials: M
authors.lastname: Moszyński