And now for something slightly different.
In the opening post I observed how Rossi's 2009 TOF-SIMS analyses didn't seem to contain Nickel at all. Weird? Perhaps not much if we think of Leif Holmlid's experiments. However there's something else that perhaps not many people are aware of: according to some of the claims in Rossi's early E-Cat patents, Nickel isn't actually required.
Have a look at this translation of the claims of Rossi's italian 2008 patent, posted on New Energy Times:
http://newenergytimes.com/v2/sr/RossiECat/docs/Rossi-ECat-Italian-Patent App-Claims-English.pdf
Quote[...]
12. Apparatus according to one or more of the previous claims, characterized by the fact that the nickel utilized for the nuclear reaction can be of any isotope
13. Apparatus according to one or more of the previous claims, characterized by the fact that the nickel utilized for the nuclear reaction can be substituted with other elements, in particular copper.
His 2009 world patent application also stated something similar, before many claims were amended later on:
https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2009125444&recNum=1&tab=PCTClaims&maxRec=&office=&prevFilter=&sortOption=&queryString=
Quote[...]
12. An apparatus according to claim 5, characterized in that said nickel powder is a nickel isotope powder.
13. An apparatus according to claim 5, characterized in that said nickel powder is replaceable by a copper powder.
The international patent is less general here, but I think it's clear that Nickel was not originally thought to be necessary.
This is consistent with the analyses shown in the opening post.
Quote from Ecco[...] The bottom line is that Rossi probably didn't use nickel at all in his first E-Cat experiments.