"Safe" Coulomb excitation of Mg-30
Journal article, 2005
We report on the first radioactive beam experiment performed at the recently commissioned REX-ISOLDE facility at CERN in conjunction with the highly efficient γ spectrometer MINIBALL. Using Mg-30 ions accelerated to an energy of 2.25 MeV/u together with a thin Ni-nat target, Coulomb excitation of the first excited 2(+) states of the projectile and target nuclei well below the Coulomb barrier was observed. From the measured relative deexcitation γ-ray yields the B(E2;0(gs)(+)→ 2(1)(+)) value of Mg-30 was determined to be 241(31)e(2) fm(4). Our result is lower than values obtained at projectile fragmentation facilities using the intermediate-energy Coulomb excitation method, and confirms the theoretical conjecture that the neutron-rich magnesium isotope Mg-30 resides outside the "island of inversion."
NUCLEI
SILICON
TRANSITION
ISOTOPES
DETECTOR
COLLECTIVITY
ISOLDE
SHELL-MODEL
Author
O. Niedermaier
H. Scheit
V. Bildstein
H. Boie
J. Fitting
R. von Hahn
F. Kock
M. Lauer
U. K. Pal
H. Podlech
R. Repnow
D. Schwalm
C. Alvarez
F. Ames
G. Bollen
S. Emhofer
D. Habs
O. Kester
R. Lutter
K. Rudolph
M. Pasini
P. G. Thirolf
B. H. Wolf
J. Eberth
G. Gersch
H. Hess
P. Reiter
O. Thelen
N. Warr
D. Weisshaar
F. Aksouh
P. Van den Bergh
P. Van Duppen
M. Huyse
O. Ivanov
P. Mayet
J. Van de Walle
J. Aysto
P. A. Butler
J. Cederkall
P. Delahaye
H. O. U. Fynbo
L. M. Fraile
O. Forstner
S. Franchoo
U. Koster
Thomas Nilsson
Chalmers, Applied Physics, Subatomic Physics
M. Oinonen
T. Sieber
F. Wenander
M. Pantea
A. Richter
G. Schrieder
H. Simon
T. Behrens
R. Gernhauser
T. Kroll
R. Krucken
M. Munch
T. Davinson
J. Gerl
G. Huber
A. Hurst
J. Iwanicki
Björn Jonson
Chalmers, Applied Physics, Subatomic Physics
P. Lieb
L. Liljeby
A. Schempp
A. Scherillo
P. Schmidt
G. Walter
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 94 17 172501 (artno)-Subject Categories (SSIF 2011)
Subatomic Physics
DOI
10.1103/PhysRevLett.94.172501