Deuteron Fusion Experiment with Ti and Pd Foils Implanted with Deuteron Beams II

Deuteron implantation experiments on Ti and Pd foils have been made for the examination of the “cold” deuteron fusion reaction. In the center of a target chamber fitted to a 300 keV deuteron accelerator, a Ti or Pd foil sample was set to face toward 3 nsec pulsed deuteron beams collimated with a 3 mm diameter aperture. A Si-SSD was placed behind the foil to detect high energy charged particles emitted from the foil by the supposed deuteron fusion reactions. In the 243 keV deuteron implantation experiments for 3-20 μm Ti and 5-22 μm Pd foils, unusual counts and peaks were measured in the energy region higher than the proton peak due to the well-known D-D reaction. And from the energy loss measurement with the screen foil in front of the Si-SSD, some of the unusual high energy peaks were found to be helium, though the original reactions are not identified. These helium peaks and unnatural counts are difficult to explain and might have something to do with the multibody fusion reactions proposed by A. Takahashi. More elaborate experiments with more detailed measurement such as correlated particle measurement should be necessary for confirmation of the multibody fusion reaction.