800-MeV inelastic proton scattering fromCa40,Ca48, andFe54

Abstract

Differential cross sections have been measured over a wide range of angles for the well resolved and/or strongly excited peaks in the inelastic proton spectra from ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$, ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ca}$, and ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ targets. Inelastic analyzing powers were also measured for the ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ transitions. Microscopic distorted-wave impulse approximation analyses of the $2_1$ ${}_{}{}^{+}{}_{}{}^{}\mathrm{transitions}$ in ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ca}$ and ${}_{}{}^{54}{}_{}{}^{}\mathrm{Fe}$ yield values for the ratio $\frac{B\left(N2\mathrm{}\right)\mathrm{}}{B\left(E2\mathrm{}\right)\mathrm{}}$. Collective-model distorted-wave Born-approximation calculations for the high-spin levels at 8.85 and 9.24 MeV in ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ suggest spin and parity assignments of $6^{+}$ and $5^{-}$, respectively.