Lifetime measurements in 42Sc

Abstract

Levels of 42Sc were populated with the40Ca(τ, p)42Sc reaction at Eτ = 8.4 and 8.6 MeV. Gamma rays were measured in coincidence with protons. From Doppler-shift attenuation measurements mean lifetimes (or limits) have been obtained for 15 levels below Ex = 4 MeV. Also, for many states accurate (1–2 keV) excitation energies were obtained. The lifetimes have been compared with calculations based on the wave functions of Flowers and Skouras which have both spherical and deformed components.