Lifetime measurements of excited states in neutron-rich Ti53: Benchmarking effective shell-model interactions

A. Goldkuhle et al.
Phys. Rev. C 102, 054334 – Published 30 November 2020

Abstract

Level lifetimes of the yrast (5/2) to 13/2 states in the neutron-rich nucleus Ti53, produced in a multinucleon-transfer reaction, have been measured for the first time. The recoil distance Doppler-shift method was employed and lifetimes of the excited states were extracted by a lineshape analysis aided by Geant4-based Monte-Carlo simulations. The experiment was performed at the Grand Accélérateur National d'Ions Lourds facility in Caen, France, 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 and the Cologne plunger for deep-inelastic reactions. Reduced transition probabilities, deduced from the lifetimes, give new information on the nuclear structure of Ti53, and are used to benchmark different shell-model calculations using established interactions in the fp shell.

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  • Received 16 July 2020
  • Accepted 10 November 2020

DOI:https://doi.org/10.1103/PhysRevC.102.054334

©2020 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 102, Iss. 5 — November 2020

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