Deep hole states observed in (p, t) reactions

The ($p, t$) reaction on ${}_{}{}^{120}{}_{}{}^{}\mathrm{Sn}$, ${}_{}{}^{122}{}_{}{}^{}\mathrm{Sn}$, and ${}_{}{}^{124}{}_{}{}^{}\mathrm{Sn}$ at a bombarding energy at 89 MeV shows a broad feature similar to the one observed at lower bombarding energy. The excitation energies and widths were consistent with those observed in the earlier experiment. Angular distributions are in good agreement with distorted-wave Born approximation calculations in which two neutrons are assumed to have been picked up from deeply bound orbits.