a-cluster states in Ti have been investigated in the Ca ( Li,d ) Ti reaction at E= 50 MeV. The angular distributions of 34 levels at excitation energies for E"=O -13 MeV allow us to analyze the data. The angular distributions of positive-parity members of the ground-state band (the K =0+ band) in Ti were well reproduced by the finite-range distorted-wave Born approximation calculations up to the transferred angular momentum of L= 8. For the members of the negative-parity band (the E =0 band) with the primary quantum number N=13, three levels at 6.22, 7.34, and 9.43 MeV were identified as the 1, 3, and 5 states, respectively. The existence of a negativeparity band in Ti has been investigated for a long time and persistently gives considerable support to a-cluster models for nuclei heavier than A =40.

Two controversial states considered to have a large alpha cluster strength, the 0+ state at 8.54MeV and the 1 state at 11. 7 MeV of Ti, were examined in the ( Li,d) reaction at E( Li)=50MeV. The 11. 7-MeV state was scarcely observed, if at all, for Hl, b=5 -35', and the angular distribution for the 8.54-MeV state was unlike that of an L =0 transition. These results indicate that both states are unsuitable candidates for the lowest states of the parity doublet band of Ti in the alpha cluster model.