Anomalous nuclear reactions in condensed matter: Recent results and open questions

Clear signatures have been observed for neutron emission during deuteron infusion into metals, implying the occurrence of nuclear fusion in condensed matter near room temperature. Neutron emission can be induced in metals using both electrochemical and variational temperature/pressure means to generate nonequilibrium conditions. Ongoing research seeks to understand and control this phenomenon, with emphasis on evaluating the correlation of neutron yields with parameters such as hydrogen/metal ion ratio, pressure, and temperature variations. Experiments provide evidence for emission of about 100 neutrons in bursts lasting less than 128 mu s, although random neutron-singles emissions were also observed.