Present status and future aspects of nuclear structure close to "1"0"0Sn

The present status of experimental approach to "1"0"0Sn in the spectroscopy of excited states is landmarked by the T_z=3/2 nuclei between "9"5Pd and "1"0"1In and the T_z=1 nuclei "9"4Pd and "9"8Cd. The detection limits with Pre-EUROBALL #gamma#-arrays and ancillary detectors are below the 10"-"5 level of the total fusion - evaporation residue cross section. A large scale shell model analysis of the existing data reveals the shell structure at "1"0"0Sn, which shows a remarkable similarity to "5"6Ni. Evidence for an increasing proton-neutron interaction in approaching the N=Z line is deduced from high spin isomers and spherical yrast lines. The effective E2 operator for protons and neutrons and implications for a low lying particle-hole (ph) E2 excitation in "1"0"0Sn are discussed. (orig.)SIGLEAvailable from FIZ Karlsruhe / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman