Low-spin excitations in [sup 100]Pd

Abstract

In recent years collectivity in the mass region around A = 100 has become the focus of increased interest. The N = 52 isotones were investigated in detail and phonon excitations ‐especially one‐ and two‐phonon mixed‐symmetry states—were identified. In order to investigate how vibrator‐like behavior and states with mixed‐symmetry character evolve with increasing neutron number it is interesting to study the N = 54 isotones. Therefore an experiment to measure the low‐spin excitations of 100Pd was performed at the FN‐Tandem accelerator with the HORUS cube spectrometer. Besides the determination of excitation and transition energies and branching ratios, spins and multipole mixing ratios resulted from the γγ angular correlation analysis. The newly gained data were compared with predictions from theory both from collective models and from shell model.