PT Journal
AU AGATA Collaboration (Goldkuhle, Aea
   Perez-Vidal, RM
   Domingo-Pardo, C
   Gadea, A
TI Lifetime measurements in Ti-52,Ti-54 to study shell evolution toward N=32
SO Physical Review C
JI Phys. Rev. C
PY 2019
BP 054317
EP 12pp
VL 100
IS 5
DI 10.1103/PhysRevC.100.054317
LA English
AB Lifetimes of the excited states in the neutron-rich Ti-52,Ti-54 nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance Doppler-shift method. The experiment was performed at the Grand Accelerateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the gamma-ray detection, coupled to the large-acceptance variable mode spectrometer for an event-by-event particle identification. A comparison between the transition probabilities obtained from the measured lifetimes of the 2(1)(+) to 8(1)(+) yrast states in Ti-52,Ti-54 and that from the shell-model calculations based on the well-established GXPF1A, GXPF1B, and KB3G fp shell interactions support the N = 32 subshell closure. The B(E2) values for Ti-52 determined in this work are in disagreement with the known data, but are consistent with the predictions of the shell-model calculations and reduce the previously observed pronounced staggering across the even-even titanium isotopes.
ER