Nuclear charge radii of neutron-deficient lead isotopes beyond N = 104 midshell investigated by in-source laser spectroscopy.
The shape of exotic even-mass (182-190)Pb isotopes was probed by measurement of optical isotope shifts providing mean square charge radii (delta(r(2))). The experiment was carried out at the isolde (cern) on-line mass separator, using in-source laser spectroscopy. Small deviations from the spherical droplet model are observed, but when compared to model calculations, those are explained by high sensitivity of delta(r(2)) to beyond mean-field correlations and small admixtures of intruder configurations in the ground state. The data support the predominantly spherical shape of the ground state of the proton-magic Z=82 lead isotopes near neutron midshell (N=104).
De Witte
H
H
Instituut voor Kern- en Stralingsfysica, K.U. Leuven, B-3001 Leuven, Belgium.
Andreyev
A N
AN
Barré
N
N
Bender
M
M
Cocolios
T E
TE
Dean
S
S
Fedorov
D
D
Fedoseyev
V N
VN
Fraile
L M
LM
Franchoo
S
S
Hellemans
V
V
Heenen
P H
PH
Heyde
K
K
Huber
G
G
Huyse
M
M
Jeppessen
H
H
Köster
U
U
Kunz
P
P
Lesher
S R
SR
Marsh
B A
BA
Mukha
I
I
Roussière
B
B
Sauvage
J
J
Seliverstov
M
M
Stefanescu
I
I
Tengborn
E
E
Van de Vel
K
K
Van de Walle
J
J
Van Duppen
P
P
Volkov
Yu
Y