title: (68)(28)Ni(40): Magicity versus superfluidity.
abstract: The neutron-rich (66,68)Ni have been produced at GANIL via interactions of a 65.9A MeV 70Zn beam with a 58Ni target. Their reduced transition probability B(E2;0(+)(1)-->2+) has been measured for the first time by Coulomb excitation in a (208)Pb target at intermediate energy. The B(E2) value for (68)Ni(40) is unexpectedly small. An analysis in terms of large scale shell model calculations stresses the importance of proton core excitations to reproduce the B(E2) values and indicates the erosion of the N = 40 harmonic-oscillator subshell by neutron-pair scattering.
authors.affiliation: Institut de Physique Nucléaire, IN2P3-CNRS, F-91406 Orsay Cedex, France.
authors.forename: O
authors.initials: O
authors.lastname: Sorlin
authors.forename: S
authors.initials: S
authors.lastname: Leenhardt
authors.forename: C
authors.initials: C
authors.lastname: Donzaud
authors.forename: J
authors.initials: J
authors.lastname: Duprat
authors.forename: F
authors.initials: F
authors.lastname: Azaiez
authors.forename: F
authors.initials: F
authors.lastname: Nowacki
authors.forename: H
authors.initials: H
authors.lastname: Grawe
authors.forename: Zs
authors.initials: Z
authors.lastname: Dombrádi
authors.forename: F
authors.initials: F
authors.lastname: Amorini
authors.forename: A
authors.initials: A
authors.lastname: Astier
authors.forename: D
authors.initials: D
authors.lastname: Baiborodin
authors.forename: M
authors.initials: M
authors.lastname: Belleguic
authors.forename: C
authors.initials: C
authors.lastname: Borcea
authors.forename: C
authors.initials: C
authors.lastname: Bourgeois
authors.forename: D M
authors.initials: DM
authors.lastname: Cullen
authors.forename: Z
authors.initials: Z
authors.lastname: Dlouhy
authors.forename: E
authors.initials: E
authors.lastname: Dragulescu
authors.forename: M
authors.initials: M
authors.lastname: Górska
authors.forename: S
authors.initials: S
authors.lastname: Grévy
authors.forename: D
authors.initials: D
authors.lastname: Guillemaud-Mueller
authors.forename: G
authors.initials: G
authors.lastname: Hagemann
authors.forename: B
authors.initials: B
authors.lastname: Herskind
authors.forename: J
authors.initials: J
authors.lastname: Kiener
authors.forename: R
authors.initials: R
authors.lastname: Lemmon
authors.forename: M
authors.initials: M
authors.lastname: Lewitowicz
authors.forename: S M
authors.initials: SM
authors.lastname: Lukyanov
authors.forename: P
authors.initials: P
authors.lastname: Mayet
authors.forename: F
authors.initials: F
authors.lastname: de Oliveira Santos
authors.forename: D
authors.initials: D
authors.lastname: Pantalica
authors.forename: Yu-E
authors.initials: YE
authors.lastname: Penionzhkevich
authors.forename: F
authors.initials: F
authors.lastname: Pougheon
authors.forename: A
authors.initials: A
authors.lastname: Poves
authors.forename: N
authors.initials: N
authors.lastname: Redon
authors.forename: M G
authors.initials: MG
authors.lastname: Saint-Laurent
authors.forename: J A
authors.initials: JA
authors.lastname: Scarpaci
authors.forename: G
authors.initials: G
authors.lastname: Sletten
authors.forename: M
authors.initials: M
authors.lastname: Stanoiu
authors.forename: O
authors.initials: O
authors.lastname: Tarasov
authors.forename: Ch
authors.initials: Ch
authors.lastname: Theisen