Nuclear structure close to<SUP>100</SUP>Sn

Sammanfattning: The nuclear structure of neutron deficient isotopes in thevicinity of the douhle shell closure at1ooSn has been experimentally investigated by meansof y-spectroscopic meth ods. Experimental information onexcit,ed st,ates in nuclei in the vicinity of1ooSn has been scarce until recently. Theexperiments reported in this thesis have utilized multidetectorsystems comprising high resolution Compton suppressed germaniumspectrometers, neutron detectors and charged particle detectorsto identify residues from heavy-ion induced fusion-evaporationreactions. The first in-beam observation of excited states in1o6,1o7,1o8,Sb as well as in the one-hole two-particlenucleus1ooIn and the two-hole one particle nucleus99Cd is reported. The experimental information onexcited states in a number of other isotopes has beenconsiderably extended. The results thus provide new informationthat is vital for the interpretation of nuclear structure usingthe nuclear shell model.Keywords:y-ray spectroscopy far from stabilit.y,fusion-evaporation reactions, multidetector arrays, nuclearshell model.