抄録
Since it was reported that the D-D nuclear fusion might be occurring by the electrolysis of heavy water in a room temperature, so many scientists have been trying to verify the reaction.
In this study, we used some kinds of hydrogen-absorbing metal, namely Pd, Ti, TiNi0.5, TiNi, ZrV1.8Ni0.2 and ZrV1.5Ni0.5 as the cathode, and measured continuously γ-ray emission by γ survey meter accompanying the electrolysis in LiOD/D2SO4-D2O solution. At the same time, the quite same experiment was carried out in an ordinary water containning LiOH or H2SO4 as the reference standard. These cathodes were mainly the sintered and the anode was always Pt-wire. The electrolysis was carried out by a constant current method till the electrode was saturated by D or H. And also, degrees of the charged H or D into metals were measured by using another cell.
For the heavy-water electrolysis, meaning γ-ray emissions were observed in any case of these metal electrodes. But, in the cases of Ti-Ni and Zr-V-Ni system metals which have larger hydrogen-absorbing abilities than Pd, their γ-ray emissions, that is, the fusion rates were few times as much as that of Pd. From start to finish of the electrolysis, the fusion rate was not very dependent on the deutrium concentration in the electrode in every case. And so, the fusion rate per deuteron pair per second decreased with the lapse of electrolizing time. From these results, it was considered that the fusion might be occurring in a deuterium diffuse layer or a reaction zone where the metal phase is transforming to the deuteride phase and micro-cracks are developing because of the lattice expansion.
