ISOBARIC ANALOG RESONANCES IN PROTON ELASTIC SCATTERING FROM 136XE

Isobaric analog states have been observed in proton elastic scattering from Xe136 at proton energies from 9.77 to 12.98 MeV. The observed levels in Cs137 are identified as analogs of low-lying states of Xe137. The data have been analyzed using a shell-model description of isobaric analog resonances. Orbital angular momentum transfer values, resonance energies, total and partial widths, and spectroscopic factors for most of the observed resonances are presented. The spectroscopic factors are shown to be highly insensitive to the choice of optical-model parameters. The results are compared with (d,p) studies on the target nucleus. The observed Coulomb displacement energy is 14.057±0.040 MeV. © 1969 The American Physical Society.