Deep-hole and high-lying particle states in heavy nuclei

Our present knowledge on single-particle strength functions from one nucleon transfer reactions is reviewed. Results on deeply-bound neutron hole states in the Sn and Pb region are discussed with emphasis on the investigation of a very large excitation energy range. The first measurements on the γ-decay of deeply-bound hole states in the Sn isotopes are reported. High energy neutron and proton stripping reactions are used to study the particle response function. These reactions are particularly well suited to the study of high-spin outer subshells. For the proton states, the behaviour of the 1hsub(11/2) and 1isub(13/2) strength distributions, as a function of deformation in the Sm region, is discussed. Strong transitions to high-lying neutron states are observed in the sup(112,116,118,120,122,124)Sn and 208Pb nuclei. The empirical systematics for both proton and neutron particle strength distributions will be compared to the predictions from the quasi particle-phonon and the single-particle vibration coupling nuclear models