B(E2) values in 150Nd and the critical point symmetry X(5).
Lifetimes of states in 150Nd were measured using the recoil distance method following Coulomb excitation of 150Nd by a 132 MeV 32S beam. The experiment was performed at the Yale Tandem accelerator, employing the SPEEDY gamma-ray detector array and the New Yale Plunger Device. Reduced transition probabilities in 150Nd are compared to the predictions of the critical point symmetry X(5) of the phase/shape transition that occurs for the N = 90 rare earth isotones. Very good agreement was observed between the parameter-free (apart from scale) X(5) predictions and the low-spin level scheme of 150Nd, revealing this as the best case thus far for the realization of the X(5) symmetry.
Krücken
R
R
A. W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520, USA.
Albanna
B
B
Bialik
C
C
Casten
R F
RF
Cooper
J R
JR
Dewald
A
A
Zamfir
N V
NV
Barton
C J
CJ
Beausang
C W
CW
Caprio
M A
MA
Hecht
A A
AA
Klug
T
T
Novak
J R
JR
Pietralla
N
N
Von Brentano
P
P