The reason this thread was started was to try to explain Parkhomov's data of 4+% enrichment of 64Ni, which was depleted during the run, and consequently - this isotope is the most likely candidate to provide the excess energy which he sees.
The precise situation is that an element of 64 amu was seen in mass spectroscopy- and identified as 64Ni, which should only be found in a concentration which is 400% lower. However ... it should be noted that there is one other possibility to consider. Zinc-64 is the most common isotope of zinc, and it is slightly radioactive ! It has a long half-life but the fact that it is known to be radioactive could play a role in a process where protons are present in a metal matrix, and can disrupt the electrostatic balance of nuclei. Zinc is a common metal in ores with high sulfur and can end up in nickel, if not carefully refined. The problem is that get 4% 64Zn, there would need to be 8% of zinc metal in the alloy. However, this could happen. The tester would see mass-64 and mislabel it as nickel if that is what was expected. Furthermore, this scenario is not out of the question, if the nickel had been recycled. There is a common zinc alloy with nickel which is the most common electroplating alloy used is the electro-galvanization process for protection of metal surfaces. Parkhomov was known to be working on a low budget, and he may have used a recycled nickel as his fuel. This would actually be good news if true, since zinc is relatively cheap. I doubt this is the case, but it should be mentioned as a possibility.
