Search for neutrons from deuterium-deuterium nuclear reactions in electrochemically charged palladium

We report on a search for neutrons from dd fusion in Pd rods loaded electrochemically with deuterium. In a four-week measurement we observe <0.007 n/(sec g) Pd, compared to 2.6×${10}^3$ n/(sec g) Pd, claimed recently by Pons, Fleischmann, and Hawkins. Our result implies <2.2×${10}^{\mathrm{-}24}$ (ddn) fusions/[(dd pair) sec], as compared to ∼${10}^{\mathrm{-}23}$ (ddn) fusions/[(dd pair) sec] observed by Jones et al. in a Ti electrode.