Abstract

The angular distributions for the 89Y(p, t), (p, τ), and (d, α) reactions are compared to DWBA predictions and to the data for the 90Zr(p, t) and (d, α) reactions. Several new spins are assigned to levels of 87Y. A weak coupling model is tested by the comparison between the reactions on 89Y and 90Zr, and found to fail. The (d, α) reaction is found to populate strongly levels at excitation energies of 2.70 MeV and 3.07 MeV in 87Sr, corresponding roughly in Q-value and strength to states formed in ths 88Sr(d, α) 86Rb reaction.

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