Microscopic analysis of the three-particle transfer reactionZr92(p, α)Y89

The reaction ${}_{}{}^{92}{}_{}{}^{}\mathrm{Zr}(p, \alpha ){}_{}{}^{89}{}_{}{}^{}\mathrm{Y}$ is analyzed by applying a microscopic theory to the three-particle transfer reaction. Good fits to the angular distributions are obtained for the transitions to the four low-lying states of ${}_{}{}^{89}{}_{}{}^{}\mathrm{Y}$. Relative cross sections of all four transitions, calculated from wave functions given in the literature, are strongly influenced by core-excited configurations. With their inclusion the calculations are in excellent agreement with the experiment. It is thus shown that in the microscopic description the ($p, \alpha$) reaction is a sensitive tool for testing wave functions.