α decaying states of 44,46,52Ti were investigated with angular correlation functions between t and α with the 40,42,48Ca(7Li, tα)40,42,48Ca reactions at E = 26.0 MeV. Many α cluster states were newly observed in the 10 - 15 MeV excitation energy of 44Ti and their spin-parities were assigned, in which Jπ=7− state was found at 11.95 MeV as a candidate for the member of the K=01− negative parity band. In 46Ti many α cluster states were also found in the 11 - 17 MeV excitation energy with the 42Ca(7Li, tα)42Ca reaction, though its strength is weak compared to 44Ti. No α cluster states were detected for the 48Ca(7Li, tα)48Ca reaction, in which the number of coincidence events decaying from 48Ca was very small.
@article{arxiv.1102.2269,
title = {$\alpha$ cluster states in $^{44, 46, 52}$Ti},
author = {M. Fukada and M. K. Takimoto and K. Ogino and S. Ohkubo},
journal= {arXiv preprint arXiv:1102.2269},
year = {2011}
}