Work

Lifetime measurements in Ti52,54 to study shell evolution toward N=32

Year: 2019
Type: article
Abstract: Lifetimes of the excited states in the neutron-rich $^{52,54}\mathrm{Ti}$ 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 Acc\'el\'erateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the $\ensuremath{\gamma}$-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 $^{52,54}\mathrm{Ti}$ 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 $^{52}\mathrm{Ti}$ 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.
Language: English
Open Access status: hybrid
OpenAlex ID: W2988187495
FWCI: 1.168
Cites: 47
Cited by: 19
Related to: 9