title: Hindered proton collectivity in 16(28)S12: possible magic number at Z=16.
abstract: The reduced transition probability B(E2;0(gs)(+)→2(1)(+)) for (28)S was obtained experimentally using Coulomb excitation at 53 MeV/nucleon. The resultant B(E2) value 181(31) e(2)fm(4) is smaller than the expectation based on empirical B(E2) systematics. The double ratio |M(n)/M(p)|/(N/Z) of the 0(gs)(+)→2(1)(+) transition in (28)S was determined to be 1.9(2) by evaluating the M(n) value from the known B(E2) value of the mirror nucleus (28)Mg, showing the hindrance of proton collectivity relative to that of neutrons. These results indicate the emergence of the magic number Z=16 in the |T(z)|=2 nucleus (28)S.
authors.affiliation: RIKEN Nishina Center, Saitama 351-0198, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Togano
authors.forename: Y
authors.initials: Y
authors.lastname: Yamada
authors.forename: N
authors.initials: N
authors.lastname: Iwasa
authors.forename: K
authors.initials: K
authors.lastname: Yamada
authors.forename: T
authors.initials: T
authors.lastname: Motobayashi
authors.forename: N
authors.initials: N
authors.lastname: Aoi
authors.forename: H
authors.initials: H
authors.lastname: Baba
authors.forename: S
authors.initials: S
authors.lastname: Bishop
authors.forename: X
authors.initials: X
authors.lastname: Cai
authors.forename: P
authors.initials: P
authors.lastname: Doornenbal
authors.forename: D
authors.initials: D
authors.lastname: Fang
authors.forename: T
authors.initials: T
authors.lastname: Furukawa
authors.forename: K
authors.initials: K
authors.lastname: Ieki
authors.forename: T
authors.initials: T
authors.lastname: Kawabata
authors.forename: S
authors.initials: S
authors.lastname: Kanno
authors.forename: N
authors.initials: N
authors.lastname: Kobayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Kondo
authors.forename: T
authors.initials: T
authors.lastname: Kuboki
authors.forename: N
authors.initials: N
authors.lastname: Kume
authors.forename: K
authors.initials: K
authors.lastname: Kurita
authors.forename: M
authors.initials: M
authors.lastname: Kurokawa
authors.forename: Y G
authors.initials: YG
authors.lastname: Ma
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuo
authors.forename: H
authors.initials: H
authors.lastname: Murakami
authors.forename: M
authors.initials: M
authors.lastname: Matsushita
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: K
authors.initials: K
authors.lastname: Okada
authors.forename: S
authors.initials: S
authors.lastname: Ota
authors.forename: Y
authors.initials: Y
authors.lastname: Satou
authors.forename: S
authors.initials: S
authors.lastname: Shimoura
authors.forename: R
authors.initials: R
authors.lastname: Shioda
authors.forename: K N
authors.initials: KN
authors.lastname: Tanaka
authors.forename: S
authors.initials: S
authors.lastname: Takeuchi
authors.forename: W
authors.initials: W
authors.lastname: Tian
authors.forename: H
authors.initials: H
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: K
authors.initials: K
authors.lastname: Yoneda