DEEP-INELASTIC REACTIONS - A NEW TOOL FOR NUCLEAR SPECTROSCOPY

Binary reaction products of Mo-92+Ni-60, Cd-106+Fe-54, Sn-124+Se-80,Ge-76, Pb-208+Ni-64 and Gd-160+S-36, Cl-37 heavy ion collisions 10-15% above the barrier have been studied in gamma-ray thick target experiments. The product yield distributions have been obtained for some of the reactions from gamma-gamma coincidence intensities as well as from target radioactivity measurements. The mass transfer between colliding nuclei is discussed in terms of mass and charge equilibration processes. These deep inelastic processes were found to populate a large number of neutron-rich nuclei strongly enough for yrast spectroscopy studies. New spectroscopic results are presented for the sdf shell nuclei Si-33, P-34, Cl-39, for (64),(65),(66),Ni-67 products and for heavy tin isotopes (119),(121),(122),(123),(124) Sn. Also yrast excitations in the Ni-68 have been identified showing a substantial subshell closure at neutron number N = 40.