Energy Levels ofCa48andCa40as Observed with Inelastic Scattering of 11.5-MeV Protons

Abstract

The ${\mathrm{Ca}}^{48}(p,p^{\prime }){\mathrm{Ca}}^{48}$ reaction has been investigated with a broad-range magnetic spectograph and an 11.5-MeV beam from a tandem Van de Graaff. Inelastically scattered proton groups were recorded at four angles with an over-all energy resolution width of about 15 keV. Excited states in ${\mathrm{Ca}}^{48}$ were found at 3833±4, 4284±6, 4506±4, 4613±4, 5146±5, 5368±5, 5728±8, 6106±7, and 6338±10 keV. Proton groups from the ${\mathrm{Ca}}^{40}(p,p^{\prime }){\mathrm{Ca}}^{40}$ reaction were also observed in these data. Excitation energies of levels in ${\mathrm{Ca}}^{40}$ were measured to be 3353±4, 3738±4, 3907±4, 4492±5, 5280±8, 5612±8, 5625±8, and 6025±8 keV.