Polarization transfer in inelastic proton scattering from 4(-) states in 16O at 350 MeV.

Abstract

This experiment has measured cross sections, analyzing powers, and the spin observables P, ${\mathit{D}}_{\mathit{ss}}^{\ensuremath{'}}$, ${\mathit{D}}_{\mathit{sl}}^{\ensuremath{'}}$, ${\mathit{D}}_{\mathit{nn}}^{\ensuremath{'}}$, ${\mathit{D}}_{\mathit{ll}}^{\ensuremath{'}}$, ${\mathit{D}}_{\mathit{ls}}^{\ensuremath{'}}$ for the reaction $^{16}\mathrm{O}$(p,${\mathit{p}}^{\ensuremath{'}}$) at 350 MeV populating three ${4}^{\mathrm{\ensuremath{-}}}$ states. These ``stretched'' states, at excitation energies of 17.79 MeV, 19.80 MeV (both mainly T=0), and 18.98 MeV (mainly T=1), have well known nuclear structure and are used as a nuclear filter to examine the tensor and spin-orbit components of the effective nucleon-nucleus interaction at 350 MeV. A complete set of spin observables was obtained at an angle of 22\ifmmode^\circ\else\textdegree\fi{} in the laboratory frame, whereas the ${\mathit{D}}_{\mathit{ss}}^{\ensuremath{'}}$ and ${\mathit{D}}_{\mathit{sl}}^{\ensuremath{'}}$ observables were measured at laboratory angles of 17, 22, 27, and 32 degrees. The data are compared with distorted-wave impulse approximation calculations from several theoretical models. \textcopyright{} 1996 The American Physical Society.