Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei
Journal article, 2016
The B(E2) excitation strength of the first excited 2(+) state in even-even nuclei should directly correlate with the size of the valence space and maximize at mid-shell. A previously found saturation of B(E2) strengths in well-deformed rotors at mid-shell is tested through high-precision measurements of the lifetimes of the lowest-lying 2(+) states of the Hf-168 and W-174 rare earth isotopes. Measurements were performed using fast LaBr3 scintillation detectors. Combined with the recently remeasured B(E2; 2(1)(+) -> 0(1)(+)) values for Hf and W isotopes the new data remove discrepancies observed in the differentials of B(E2) values for these isotopes.
Author
V. Werner
N. Cooper
J. M. Regis
M. Rudigier
E. Williams
J. Jolie
R. B. Cakirli
R. F. Casten
T. Ahn
V. Anagnostatou
Z. Berant
M. Bonett-Matiz
M. Elvers
Andreas Martin Heinz
Chalmers, Physics, Subatomic and Plasma Physics
G. Ilie
D. Radeck
D. Savran
M. K. Smith
Physical Review C
24699985 (ISSN) 24699993 (eISSN)
Vol. 93 3Subject Categories
Subatomic Physics
Areas of Advance
Energy
DOI
10.1103/PhysRevC.93.034323