Unambiguous Identification of Threeβ-Decaying Isomers inCu70 | Zendy

J. Van Roosbroeck | Zendy; C. Guénaut | Zendy; G. Audi | Zendy; D. Beck | Zendy; K. Blaum | Zendy; G. Bollen | Zendy; J. Cederkäll | Zendy; P. Delahaye | Zendy; A. De Maesschalck | Zendy; H. De Witte | Zendy; Д. В. Федоров | Zendy; V. N. Fedoseyev | Zendy; S. Franchoo | Zendy; H. O. U. Fynbo | Zendy; M. Górska | Zendy; F. Herfurth | Zendy; K. Heyde | Zendy; M. Huyse | Zendy; A. Kellerbauer | Zendy; H.J. Kluge | Zendy; U. Köster | Zendy; K. Kruglov | Zendy; D. Lunney | Zendy; V.I. Mishin | Zendy; W. F. Mueller | Zendy; Szilvia Nagy | Zendy; S. Schwarz | Zendy; L. Schweikhard | Zendy; N. A. Smirnova | Zendy; K. Van de Vel | Zendy; P. Van Duppen | Zendy; Annelies Van Dyck | Zendy; W. B. Walters | Zendy; L. Weissman | Zendy; C. Yazidjian | Zendy

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Unambiguous Identification of Threeβ-Decaying Isomers inCu70

Author(s) -

J. Van Roosbroeck,

C. Guénaut,

G. Audi,

D. Beck,

K. Blaum,

G. Bollen,

J. Cederkäll,

P. Delahaye,

A. De Maesschalck,

H. De Witte,

Д. В. Федоров,

V. N. Fedoseyev,

S. Franchoo,

H. O. U. Fynbo,

M. Górska,

F. Herfurth,

K. Heyde,

M. Huyse,

A. Kellerbauer,

H.J. Kluge,

U. Köster,

K. Kruglov,

D. Lunney,

V.I. Mishin,

W. F. Mueller,

Szilvia Nagy,

S. Schwarz,

L. Schweikhard,

N. A. Smirnova,

K. Van de Vel,

P. Van Duppen,

Annelies Van Dyck,

W. B. Walters,

L. Weissman,

C. Yazidjian

Publication year - 2004

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.92.112501

Subject(s) - physics , ionization , ground state , proton , ion , atomic physics , analytical chemistry (journal) , nuclear physics , chemistry , quantum mechanics , chromatography

Using resonant laser ionization, beta-decay studies, and for the first time mass measurements, three beta-decaying states have been unambiguously identified in 70Cu. A mass excess of -62 976.1(1.6) keV and a half-life of 44.5(2) s for the (6-) ground state have been determined. The level energies of the (3-) isomer at 101.1(3) keV with T(1/2)=33(2) s and the 1+ isomer at 242.4(3) keV with T(1/2)=6.6(2) s are confirmed by high-precision mass measurements. The low-lying levels of 70Cu populated in the decay of 70Ni and in transfer reactions compare well with large-scale shell-model calculations, and the wave functions appear to be dominated by one proton-one neutron configurations outside the closed Z=28 shell and N=40 subshell. This does not apply to the 1+ state at 1980 keV which exhibits a particular feeding and deexcitation pattern not reproduced by the shell-model calculations.

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