He3Scattering from Nickel and Zirconium Isotopes

Abstract

Angular distributions for elastic and inelastic ${\mathrm{He}}^3$ scattering from ${\mathrm{Ni}}^{58}$, ${\mathrm{Ni}}^{60}$, ${\mathrm{Ni}}^{61}$, ${\mathrm{Ni}}^{64}$, ${\mathrm{Zr}}^{90}$, ${\mathrm{Zr}}^{91}$, ${\mathrm{Zr}}^{92}$, and ${\mathrm{Zr}}^{94}$ targets have been compiled at an incident beam energy of 25 MeV. Optical-model fits were obtained to the ${\mathrm{He}}^3$ elastic scattering angular distributions. Collective-model distorted-wave calculations were made for the inelastic scattering, utilizing the parameters obtained from the optical-model analysis of the elastic scattering, and deformation parameters were extracted. The inelastic transitions in ${\mathrm{Ni}}^{61}$ are interpreted by the core-excitation model.