Three- and five-nucleon transfers in 9Be(p, alpha )6Li reaction at 25 and 30 MeV.

Angular distributions of the $^{9}\mathrm{Be}$(p,\ensuremath{\alpha}${)}^{6}$Li reaction leading to the ground and first two excited states of $^{6}\mathrm{Li}$ were measured at incident energies of 25.0 and 30.0 MeV. Both the one-step three- and five-nucleon transfers were considered in the theoretical analysis using current shell-model wave functions. We reproduce fairly well with distorted-wave Born approximation theory the experimental energy dependence of the integrated cross sections for the ground and first excited states of $^{6}\mathrm{Li}$. A marked disagreement is observed for the second excited state, whose experimental integrated cross section shows a steeper energy dependence than the calculated one.