Abstract
Cross sections of one- and two-neutron removal reactions of , leading to the ) ground state and to bound final states of , have been measured at the National Superconducting Cyclotron Laboratory. The experiment was conducted using the S800 spectrograph and a beam energy of 92.3 MeV/u. The measured ground state and inclusive cross section values, of 74(11) and 146(33) mb, respectively, are in good agreement with calculations using eikonal reaction dynamics and shell-model nuclear structure overlaps. The widths at half maximum of the associated parallel momentum distributions of these cross sections, deduced from Gaussian fits, are 115(13) MeV/ for and 309(36) MeV/ for in the projectile rest frame. The data and calculations strongly support the shell-model description of as a spherical, doubly-magic structure.
- Received 8 March 2018
- Revised 26 June 2018
DOI:https://doi.org/10.1103/PhysRevC.98.024306
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