Coulomb Excitation of 68,70Cu: First Use of Postaccelerated Isomeric Beams
Artikel i vetenskaplig tidskrift, 2007

We report on the first low-energy Coulomb excitation measurements with radioactive Ipi=6- beams of odd-odd nuclei 68,70Cu. The beams were produced at ISOLDE, CERN and were post-accelerated by REX-ISOLDE to 2.83 MeV/nucleon. gamma rays were detected with the MINIBALL spectrometer. The 6- beam was used to study the multiplet of states (3-, 4-, 5-, 6-) arising from the pi2p3/2nu1g9/2 configuration. The 4- state of the multiplet was populated via Coulomb excitation and the B(E2;6--->4-) value was determined in both nuclei. The results obtained illustrate the fragile stability of the Z=28 shell and N=40 subshell closures. A comparison with large-scale shell-model calculations using the 56Ni core shows the importance of the proton excitations across the Z=28 shell gap to the understanding of the nuclear structure in the neutron-rich nuclei with N[approximate]40.

isomer Coulomb excitation REX-ISOLDE post-accelerator

Författare

I. Stefanescu

G. Georgiev

F. Ames

J. Aysto

D. L. Balabanski

G. Bollen

P. A. Butler

J. Cederkall

N. Champault

T. Davinson

A. De Maesschalck

P. Delahaye

J. Eberth

D. Fedorov

V. N. Fedosseev

L. M. Fraile

S. Franchoo

K. Gladnishki

D. Habs

K. Heyde

M. Huyse

O. Ivanov

J. Iwanicki

J. Jolie

Björn Jonson

Chalmers, Teknisk fysik, Subatomär fysik

Th Kroll

R. Krucken

O. Kester

U. Koster

A. Lagoyannis

L. Liljeby

G. Lo Bianco

B. A. Marsh

O. Niedermaier

Thomas Nilsson

Chalmers, Teknisk fysik, Subatomär fysik

M. Oinonen

G. Pascovici

P. Reiter

A. Saltarelli

H. Scheit

D. Schwalm

T. Sieber

N. Smirnova

J. Van De Walle

P. Van Duppen

S. Zemlyanoi

N. Warr

D. Weisshaar

F. Wenander

Physical Review Letters

Vol. 98 12 122701-4

Ämneskategorier

Subatomär fysik

DOI

10.1103/PhysRevLett.98.122701