γdecay and lifetimes of excited levels inTi49

Abstract

The decay scheme of $^{49}\mathrm{Ti}$ up to 5.2 MeV excitation energy was investigated by the ($d,p\ensuremath{\gamma}$) and ($p,{p}^{\ensuremath{'}}\ensuremath{\gamma}$) reactions and by Coulomb excitation. Singles spectra and $p\ensuremath{-}\ensuremath{\gamma}$ coincidences were recorded. Lifetimes or lifetime limits were determined for 15 levels by Coulomb excitation or by the Doppler shift attenuation method. A consistent decay scheme for levels up to ${E}_{x}=5.2$ MeV was deduced including many so far unobserved transitions. On the basis of these results ${J}^{\ensuremath{\pi}}$ assignments are proposed and a comparison is made with the predictions of the deformed configuration mixing model.NUCLEAR REACTIONS $^{48}\mathrm{Ti}(d,p\ensuremath{\gamma})$, $^{49}\mathrm{Ti}(p,{p}^{\ensuremath{'}}\ensuremath{\gamma})$, Coulomb excitation by alpha bombardment. ${E}_{d}=6$ MeV, ${E}_{p}=6$ MeV, ${E}_{\ensuremath{\alpha}}=5.25\ensuremath{-}5.8$ MeV. Enriched $^{49}\mathrm{Ti}$ target. $p\ensuremath{-}\ensuremath{\gamma}$ coincidences. Doppler shift attenuation. Measured level energies, decay scheme, lifetimes.