Structure of Mg-33 sheds new light on the N = 20 island of inversion

2010
5 pages
Published in:
  • Phys.Lett.B 685 (2010) 253-257

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Abstract: (Elsevier)
The first reaction spectroscopy on the ground state structure of ^3^3Mg through the measurement of the longitudinal momentum distribution from the one-neutron removal reaction using a C target at 898A MeV is reported. The experiment was performed at the FRS, GSI. The distribution has a relatively narrow width (150+/-3 MeV/c (FWHM)) and the one-neutron removal cross-section is 74+/-4 mb. An increased contribution from the 2p_3_/_2 orbital is required to explain the observation showing its lowering compared to existing model predictions. This provides new information regarding the configuration of ^3^3Mg and the island of inversion.
  • Nucleon removal or knockout reactions
  • Shell structure
  • Magic number
  • Radioactive beams
  • Eikonal model