Limits on neutron emission following deuterium absorption into palladium and titanium

No evidence of neutron emission was observed following deuterium loading into palladium and titanium in both electrochemical and pressurization experiments. Upper limits obtained with a detector having a very clean neutron signature are at least 100 times lower than values reported in recent publications giving evidence of cold fusion. The deduced fusion rate limits were lower than 2×${10}^{\mathrm{-}26}$ per second per pair of deuterons.