Lifetime measurements in <SUP>52,54</SUP>Ti to study shell evolution toward <i>N</i>=32

Goldkuhle, A, Fransen, C, Blazhev, A, Beckers, M, Birkenbach, B, Braunroth, T, Clement, E, Dewald, A, Dudouet, J, Eberth, J
et al (show 79 more authors) (2019) Lifetime measurements in <SUP>52,54</SUP>Ti to study shell evolution toward <i>N</i>=32. PHYSICAL REVIEW C, 100 (5). 054317-.

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Lifetimes of the excited states in the neutron-rich Ti52,54 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 Accélérateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the γ-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 21+ to 81+ yrast states in Ti52,54 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 Ti52 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.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 13 Dec 2019 08:51
Last Modified: 22 Jun 2024 11:49
DOI: 10.1103/PhysRevC.100.054317
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