I wrote: Apart from noise in measurements, such a discrepancy might be due to > natural variation in the isotopic composition of nickel; to a reaction > eating away some of the 61Ni and 64Ni; or to Rossi's using a preparation > that is somehow depleted in these specific isotopes. >
I think the "depletion" hypothesis for explaining the low 61Ni/58Ni and 64Ni/62Ni ratios in the nickel isotopic analysis done in Sweden on behalf of Sven Kullander in connection with the E-Cat is an interesting one. I think it would be possible to accomplish depletion of sorts merely by enriching one of the other isotopes, e.g., 58Ni or 60Ni. The goal might not have been to deplete both 61Ni and 64Ni; if there was anything like this going on, it might have been simply that one of the isotopes was undesirable and the other one ended up being depleted along with it. Eric
