Excitation of the deeply bound g92 neutron hole state in 117Sn by a neutron pickup reaction with 81.7 MeV 3He particles

Abstract Neutron hole states have been investigated by neutron pickup reactions on 92 Mo, 118 Sn, 140 Ce and 208 Pb with 81.7 MeV 3 He particles. A strong effect of angular momentum mismatch has been observed to reduce the cross section for low-spin orbits. It causes the deeply bound g 9 2 orbit to appear in the spectrum of the α-particles from the 118 Sn(τ, α) 117 Sn reaction as a strong broad peak. It may provide a nice tool for investigating the coupling mechanism between the deeply bound holes and the core.