Data on the structural coexistence in the 96Zr nucleus

On the brink of the phase transition from spherical to deformed Zr isotopes, 96Zr shows a co-existence of low-lying level structures with different degrees of quadrupole collectivity. Experimental data are available, but a coherent description of the measured properties is yet missing. This paper analyses available data and critically compiles the information relevant for the interpretation of the quadrupole-collective structure of 96Zr .