The Field Gradient Tensor at the Metal Site in Hafnium Acetylacetonate

Time differential perturbed angular correlation measurements (TDPAC) were performed on 181 Ta in hafnium acetylacetonate, Hf(acac) 4 . The asymmetry parameter, quadrupole interaction frequency, and frequency distribution spread of sources of synthetic and irradiated Hf(acac) 4 were measured. Evidence for the existence of two sites with different asymmetry parameters (Beraud et al.) was not found.