Population of ³³Mg* Neutron-Unbound States from Reactions on ³⁶Si and ³⁴Al

Population of excited states often depend on the reaction that produces them. An experiment performed at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University produced secondary beams of ³⁶Si and ³⁴Al from a ⁴⁸Ca primary beam by fragmentation on a beryllium production target. Neutron-unbound states in ³³Mg* were populated when the secondary beams impinged on a segmented target consisting of alternating layers of four Si-PIN detectors (140 micrometers thick each) and three beryllium targets (199 mg/cm² thick each). The charged fragment of ³²Mg was deflected by a superconducting sweeper magnet into charged particle detectors and the neutron was detected in the MoNA-LISA scintillator array, which were detected in coincidence. Neutron unbound state energies were reconstructed using the invariant mass technique and compared to simulation. Deduced resonant energies of ³³Mg* produced by 1p-knockout from ³⁴Al or multiple particle knockout from ³⁶Si yielded different decay energy spectra, which will be presented.