Abstract
The β(-)-emitter (166)Ho is of interest as a potential radiolabel for therapeutic medical applications. A new decay data evaluation for (166)Ho has been performed using the Decay Data Evaluation Project (DDEP) methodology. New recommended values for the half-life, γ-ray emission probabilities, β(--) branching ratios, and other relevant nuclear and atomic data are provided. This paper provides a summary of the evaluation; the complete set of recommended data tables and detailed evaluator comments are available at the DDEP website.