Properties of superdeformed band population in the [Formula Presented] region

Intensities of transitions in both yrast and excited superdeformed bands in [Formula Presented] and [Formula Presented] have been measured for different compound nuclear entry conditions. The reaction of [Formula Presented], [Formula Presented]) was used at six different bombarding energies of 135, 142, 150, 155, 160, and 170 MeV, covering a wide range in compound nuclear [Formula Presented] and excitation energy (69–95 MeV). Three superdeformed bands were populated in the reactions, namely the [Formula Presented] yrast band, [Formula Presented] yrast band, and the [Formula Presented] excited band. Intensity measurements were made as a function of bombarding energy and various population effects were observed. Many of these effects are difficult to explain within the framework of the current picture of superdeformed band feeding.