Attempts in Detection of Neutrons on So-Called Cold Nuclear Fusion

Neutron emissions from electrolysis of D2O with palladium and palladium-titanium electrodes as well as from pressurized D2 gas with titanium alloys have been measured. The neutron detector system was so designed to have very low background condition. Neutron-y separation technique using liquid scintillator was applied to obtain essentially no y ray background condition for neutron counting. Special care was taken to stabilize the detection system using event-by-event data recording. No significant signal of neutron emission was observed. Upper limits of emission probability of neutron have been determined to be 6 × 10-3 s-1, 1 × 10-2 s-1, and 2.3 × 10-2 s-1 for Pd electrode, Pd-Ti electrode, and pressurized gas systems. These values are orders of magnitude lower than that presented by Jones paper (0.4 s_1).