Wednesday, December 21, 2011

Experiment: Iwamura et al., "Observation of Nuclear Transmutation" (2004)

Iwamura, Y. et al., "Observation of Nuclear Transmutation Reactions induced by D2 Gas Permeation through Pd Complexes," in Eleventh International Conference on Condensed Matter Nuclear Science (2004), Marseille, France.

Summary:  Transmutations of Ba -> Sm, Cs -> Pr and possibly Sr -> Mo seen in deuterium-loaded Pd/CaO/Pd complexes.  When MgO was substituted for CaO, no positive results were obtained.


A thin layer of Pd, beneath it a layer of CaO and beneath that a subtrate of Pd were used.  At 70 C, Deuterium was loaded into the Pd complex by subjecting one side to 1 atm D2 and the other side a vacuum.  The deuterium entered the Pd complex, separated into individual deuterons in the complex and then recombined into D2 on the other side.  Target elements were deposited on the Pd complex using different means.  In more than 60 trials, a Cs -> Pr transmutation was seen, with nearly 100 percent reproducibility.  In three cases, a Sr -> Mo transmutation was seen, with ratios of isotopes of Mo different than found in nature.  The existence of Pr was checked using several methods.  The Cs -> Pr reaction appears to have occurred in a thin surface region.  A positive correlation was seen between the rate of conversion of Cs into Pr with deuterium flux through the Pd complex.

It was necessary to infer the Sm from the presence of elements of weight 150, and two other possibilities were ruled out.  In the Ba -> Sm transmutations, there was an increase of atomic mass of 12 and atomic number of 6.

How important are unnatural ratios of isotopes? What is a Mossbaur isotope?  Assuming the data are accurate, how impressive would these results be to a specialist in the field?

No comments:

Post a Comment