title: 58Ni: an unpaired band crossing at new heights of angular momentum for rotating nuclei.
abstract: High-spin states in 58Ni have been investigated by means of the fusion-evaporation reaction 28Si(32S, 2p)58Ni at 130 MeV beam energy. Discrete-energy levels are observed in 58Ni at record-breaking 42 MeV excitation energy and angular momenta in excess of 30h. The states form regular rotational bands with unprecedented high rotational frequencies. A comparison with configuration dependent cranked Nilsson-Strutinsky calculations reveals an exceptional two-band crossing scenario, the interaction strength of which is strongly shape dependent.
authors.affiliation: Department of Physics, Lund University, S-22100 Lund, Sweden.
authors.forename: D
authors.initials: D
authors.lastname: Rudolph
authors.forename: B G
authors.initials: BG
authors.lastname: Carlsson
authors.forename: I
authors.initials: I
authors.lastname: Ragnarsson
authors.forename: S
authors.initials: S
authors.lastname: Aberg
authors.forename: C
authors.initials: C
authors.lastname: Andreoiu
authors.forename: M A
authors.initials: MA
authors.lastname: Bentley
authors.forename: M P
authors.initials: MP
authors.lastname: Carpenter
authors.forename: R J
authors.initials: RJ
authors.lastname: Charity
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authors.initials: RM
authors.lastname: Clark
authors.forename: M
authors.initials: M
authors.lastname: Cromaz
authors.forename: J
authors.initials: J
authors.lastname: Ekman
authors.forename: C
authors.initials: C
authors.lastname: Fahlander
authors.forename: P
authors.initials: P
authors.lastname: Fallon
authors.forename: E
authors.initials: E
authors.lastname: Ideguchi
authors.forename: A O
authors.initials: AO
authors.lastname: Macchiavelli
authors.forename: M N
authors.initials: MN
authors.lastname: Mineva
authors.forename: W
authors.initials: W
authors.lastname: Reviol
authors.forename: D G
authors.initials: DG
authors.lastname: Sarantites
authors.forename: D
authors.initials: D
authors.lastname: Seweryniak
authors.forename: S J
authors.initials: SJ
authors.lastname: Williams