Inelastic scattering and one-neutron-transfer reactions ofO18+Ca40

Abstract

Inelastic scattering of $^{18}\mathrm{O}$+$^{40}\mathrm{Ca}$ was investigated at ${E}_{\mathrm{c}.\mathrm{m}.}=42.85$ MeV in order to study the influence of coupled channels effects. Angular distributions were measured in the angular range ${\ensuremath{\theta}}_{\mathrm{lab}}=5\ifmmode^\circ\else\textdegree\fi{}\ensuremath{-}45\ifmmode^\circ\else\textdegree\fi{}$ for elastic scattering and inelastic excitation of the ${3}^{\ensuremath{-}}$(3.737 MeV), ${2}^{+}$(3.905 MeV), ${5}^{\ensuremath{-}}$(4.492 MeV) states in $^{40}\mathrm{Ca}$ and the ${2}^{+}$(1.982 MeV) and ${3}^{\ensuremath{-}}$(5.098 MeV) states in $^{18}\mathrm{O}$. The results are compared to distorted-wave Born approximation and coupled channel calculations employing collective form factors. The improvements of the coupled channel predictions over those of the distorted-wave Born approximation are less dramatic than observed previously for $^{16}\mathrm{O}$+$^{40}\mathrm{Ca}$. With the exception of the ground state transition, the spectroscopic factors for the one-neutron-transfer reaction $^{40}\mathrm{Ca}$($^{18}\mathrm{O}$, $^{17}\mathrm{O}$)$^{41}\mathrm{Ca}$ are in good agreement with those observed in light ion induced reactions.NUCLEAR REACTIONS $^{40}\mathrm{Ca}$($^{18}\mathrm{O}$, $^{18}\mathrm{O}$)$^{40}\mathrm{Ca}$, ${E}_{\mathrm{lab}}=62.14$ MeV; measured $\ensuremath{\sigma}(\ensuremath{\theta})$, elastic and inelastic scattering; ($^{18}\mathrm{O}$, $^{17}\mathrm{O}$) and ($^{18}\mathrm{O}$, $^{19}\mathrm{F}$) reactions; optical model, DWBA, CC calculations; deduced deformation lengths and spectroscopic factors.