Shell Structure in ³² P

The nuclear structure of 32 P was investigated by detecting multi-γ coincidences along with charged light ions following the bombardment of an 18 O target with a 30-MeV 16 O beam from the Florida State University accelerator facility using the Clarion2- Trinity array of Clover γ spectrometers and GAGG (Gd-Al-Ga-garnet) scintillators for charged particles. A number of new states up to 12 MeV excitation and spins up to 9 + were observed by their γ decay patterns. Spins and parities were assigned by comparing measured γ angular distributions with polarizations inferred from Compton-scattering asymmetries between the Ge crystals in the Clover spectrometers. The new level scheme of 32 P compares well with shell model calculations using the FSU cross-shell interaction and reasonably well with those using the sdpf-m interaction. In particular, structures with higher spin arise from promotion of more nucleons up to the f-p shell