High-spin states inTi44andSc44

Abstract
We have investigated high-spin states in Ti44 and Sc44 with the Si28(F19, p2nγ)Ti44 and Si28(F19, 2pnγ)Sc44 reactions at 45-55 MeV. Angular distribution, linear polarization, and γγ coincidence data on the emitted γ rays allowed us to construct decay schemes for states in Ti44 and Sc44, and to suggest likely spin and parity assignments for most of these states. In each case, positive parity levels with spins up to the maximum value permitted within a (f72)4 shell-model space were populated. Results of lifetime measurements for several of these states are given, and a comparison is presented of the level energies and some transition strengths to the predictions of shell-model calculations.