Abstract
The shell closure at has been investigated by a first spectroscopy of the nucleus at the Radioactive Isotope Beam Factory. Using the reaction channel in inverse kinematics, projectiles at 217 MeV/nucleon impinged on a 150 mm long liquid hydrogen target, part of the MINOS device. Prompt deexcitation rays were measured with the NaI(Tl) array . Reaction products were analyzed with the SAMURAI spectrometer, which allowed the measurement of the momentum distributions and angular momentum transfer. Data were compared to state-of-the-art theoretical predictions, including shell-model, energy-density functional, and ab initio calculations. An onset of collectivity is suggested besides the spherical configuration typical of a closed shell nucleus, such as for .
1 More- Received 28 June 2023
- Accepted 7 December 2023
DOI:https://doi.org/10.1103/PhysRevC.109.034312
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