Coincidence 16O(e

Abstract

Coincidence $^{16}(\mathrm{e}\ensuremath{\rightarrow}$,e'x) reactions with polarized electrons have been investigated in the one-photon-exchange formalism. Electromagnetic transition amplitudes are decomposed into multipoles. The nuclear energy continuum is obtained in the framework of a self-consistent random-phase approximation theory with a Skyrme III interaction. We focus our attention on the electron kinematics ${\ensuremath{\epsilon}}_{i}$=130 MeV, \ensuremath{\theta}=50\ifmmode^\circ\else\textdegree\fi{}, and on the nuclear excitation energies \ensuremath{\omega}=21 and 35 MeV. The polarization structure functions ${W}_{\mathrm{LT}\mathcal{'}}$ are discussed in parallel with angular distributions and asymmetries for the two hole states: 1${p}_{1/2}^{\mathrm{\ensuremath{-}}1}$ and 1${p}_{3/2}^{\mathrm{\ensuremath{-}}1}$. At 21 MeV we explore the properties of giant multipole resonances, whereas at 35 MeV, we show theoretical predictions for the competing knockout and semidirect reaction mechanisms. The neutron yield predicted in $^{16}(\mathrm{e}$,e'n) reactions is connected with the presence of random-phase approximation correlations in the nuclear energy continuum. Comparison is made between random-phase-approximation--Skyrme-III results and Novosibirsk experimental data.