States inP29via theS32(p,α)P29reaction

Abstract
α particles from the S32(p,α) reaction were momentum analyzed with our 100-cm modified broad range magnetic spectrograph to determine accurate excitation energies in P29. Runs were taken at laboratory observation angles of 60, 90, and 120° using protons with nominal bombarding energies of 15 and 16 MeV. Five previously unreported levels in P29 were identified at 4.6406 ± 0.0030, 5.0473 ± 0.0032, 5.5827 ± 0.0035, 5.7155 ± 0.0036, and 5.8259 ± 0.0048 MeV. Comparisons are made both with theoretical level calculations and the level structure of the conjugate nucleus Si29. A Breit-Wigner shape was used to fit the group at 4.3371 MeV; the width of this level was determined to be 48.7 ± 2.5 keV.