There is this for starters: Italian Government Slams Brakes on ‘Piezonuclear’ Fission from Science Insider (June 11, 2012)(published by Science):
Italy’s research and education minister Francesco Profumo has heeded the call from more than 1000 Italian scientists not to fund research into a controversial and disputed form of nuclear fission. The scientists had signed an online petition urging Profumo to block research on "piezonuclear" reactions at the National Institute of Metrological Research (INRIM). The petitioners say they are concerned that the institute’s president, Alberto Carpinteri, was prioritizing research on the subject and that Profumo was about to place a second proponent of the research on the institute’s scientific council. But Profumo has told ScienceInsider that he changed his mind about the council nomination and that he has "no intention" of funding piezonuclear research without the backing of the scientific community.
Carpinteri, a civil engineer at the Politecnico di Torino in Turin, Italy, has worked on the controversial research with a handful of other Italian scientists since 2008. His collaborators include Fabio Cardone, a physicist at the National Research Council in Rome. The researchers claim that when they crush various kinds of rock, they observe very high emissions of neutrons: 10 times the background level in the case of granite, and 100 times in the case of basalt. They interpret the emissions as being due to the splitting, or fission, of iron atoms in the rock into lighter atoms such as those of aluminum. Unlike the materials used in conventional fission reactions, the crushed rock does not emit ionizing gamma rays or leave behind radioactive waste, the researchers say.
Speaking to ScienceInsider, Carpinteri acknowledged that the group’s conclusion is controversial, as established nuclear physics shows that the compression could not supply the enormous amounts of energy needed to split nuclei. But he argues that several other lines of evidence—including chemical analyses he and his colleagues have carried out on the rock samples before and after compression—indicate that nonstandard fission is indeed taking place. "The classical theory of fission still has a few holes in it," Carpinteri says.
Other researchers, however, remain far from convinced. Three different groups, from Canada, Sweden, and Italy, published papers in 2010 criticizing the rock-compression experiments and similar work by Cardone. And in a paper uploaded to the arXiv preprint server on 29 May, nine researchers from INRIM took aim at the chemical analysis carried out on the rock samples. They show that many identical numbers reported in the analysis, which are quoted to two decimal places, are more closely correlated than would be expected from independent measurements—although the paper says nothing about how the correlation might have occurred.
The online petition, started 24 May, urges Profumo not to spend public research money on what it calls projects "without, at least for the moment, any scientific foundation." The petitioners argue that INRIM’s work on piezonuclear reactions would "bring discredit to the whole research system."
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