Abstract
Level lifetimes of the yrast to states in the neutron-rich nucleus , 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 -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 , and are used to benchmark different shell-model calculations using established interactions in the shell.
- Received 16 July 2020
- Accepted 10 November 2020
DOI:https://doi.org/10.1103/PhysRevC.102.054334
©2020 American Physical Society