LOW ENERGY NUCLEAR TRANSMUTATION IN CONDENSED MATTER INDUCED BY D_2 GAS PERMEATION THROUGH PD COMPLEXES: CORRELATION BETWEEN DEUTERIUM FLUX AND NUCLEAR PRODUCTS

摘要

Observations of low energy nuclear reactions induced by D_2 gas permeation through Pd complexes (Pd/CaO/Pd) were presented at ICCF-9 and in a paper published in the Japanese Journal of Applied Physics. When Cs was added on the surface of a Pd complex, Pr emerged on the surface while Cs decreased after the Pd complex was subjected to D_2 gas permeation. When Sr was added to the surface, Mo emerged while the Sr decreased after D_2 gas permeation. The isotopic composition of the detected Mo was different from the natural abundance. In this paper, recent progress of our research is described. The detected Pr was confirmed by various methods such as TOF-SIMS, XANES, X-ray Fluorescence Spectrometry and ICP-MS. Analysis of the depth profile of Pr indicated that a very thin surface region up to 100 A was the active transmutation zone. Many experimental results showed that the quantity of Pr was proportional to the deuterium flux through Pd complex. The cross-section of transmutation of Cs into Pr can be roughly estimated at 1 barn if we consider the deuterium flux as an ultra low energy deuteron beam.