Bohr-Mottelson model

The Bohr-Mottelson model describes how atomic nuclei behave by combining two perspectives: the nucleus as a collective, rotating object and as a system with individual particle motions. It views the nucleus like a spinning, slightly deformed shape—similar to a rugby ball—resulting in specific energy levels that can be observed in experiments. This model helps explain patterns of nuclear states and transitions, revealing how nuclei can act as both collective entities and assemblies of particles, providing a unified understanding of nuclear structure and behavior.