Neutron-unbound states in ^34,35Al* and ³⁴Mg*

The interplay between deformation, the degeneracy of the fp shells and the coupling with the continuum plays an important role in the structure of neutron-rich nuclei between N=20 and N=28. However, information on neutron-unbound states is scarce and yet essential to benchmark the theoretical models in this region. An experiment at the National Superconducting Cyclotron Laboratory (NSCL) was performed to investigate the neutron-unbound states of 34,35Al* and 34Mg* using a 100~MeV/u 36Si secondary beam. The beam-velocity reaction products were detected in the forward direction in coincidence and a kinematically complete measurement was made using the MoNA-Sweeper setup: the neutrons emitted from the decay were detected using 272 plastic scintillator bars of the MoNA-LISA array. The charged fragments were deflected by the Sweeper dipole magnet, and their tracking information and identification were measured by a suite of charged particle detectors. Spectroscopy of the unbound excited states of 34,35Al* and 34Mg* is performed using the invariant-mass technique. The decay energy is calculated using the reconstructed momenta of the coincident fragment+n events. Preliminary results from the ongoing analysis including the decay energy spectra for these three cases will be presented.