ReactionCd114(p,p′) by use of polarized protons and proton-γangular correlations

The reactions ${}_{}{}^{114}{}_{}{}^{}\mathrm{Cd}$($p$,$p^{\prime }$) and ${}_{}{}^{114}{}_{}{}^{}\mathrm{Cd}$($p$,$p^{\prime }\gamma$) have been studied for polarized and unpolarized protons at a bombarding energy of 11 MeV. Differential and double differential cross sections as well as analyzing powers, correlation asymmetries, and the spin flip probability have been measured by use of a multidetector arrangement consisting of 11 silicon surface barrier detectors and two Ge(Li) detectors. The experimental data have been analyzed in terms of coupled channels on the basis of a harmonic vibrator and a rigid symmetric rotator model. The correlation data are found to be more sensitive to the models used and the sign of the quadrupole deformation than differential cross sections and analyzing powers. Considering the correlation data, the rotator model with oblate deformation must be ruled out for ${}_{}{}^{114}{}_{}{}^{}\mathrm{Cd}$. The best description of the experiment is obtained by the harmonic vibrator model. Compound nucleus contributions can be neglected.