SUPERDEFORMED NUCLEI PRODUCED IN ALPHA-XN CHANNEL IN THE A-SIMILAR-OR-EQUAL-TO-150 MASS REGION

The aim of this work is to get more information about the population m echanism of superdeformed (SD) bands in the A similar or equal to 150 mass region. Usually, SD bands were populated in heavy-ion induced fus ion reactions and most of them have been seen in xn exit channels. Wit h the new generation of gamma-ray arrays, we are able to see SD struct ures populated in charged particle channels. Four experiments have bee n performed at the Vivitron accelerator in Strasbourg using the EUROGA M II spectrometer to study these phenomena (especially in alpha-partic le channels).