Piezonuclear reactions - do they really exist?

In a number of recent articles in this journal F. Cardone and collaborators have claimed the observation of several striking nuclear phenomena which they attribute to "piezonuclear reactions". One such claim [F. Cardone, R. Mignani, A. Petrucci, Phys. Lett. A 373 (2009) 1956] is that subjecting a solution of 228Th to cavitation leads to a "transformation" of thorium nuclei that is 104 times faster than the normal nuclear decay for this isotope. In a "Comment" [G. Ericsson, S. Pomp, H. Sjöstrand, E. Traneus, Phys. Lett. A 373 (2009) 3795] to the thorium work, we have criticized the evidence provided for this claim. In a "Reply" [F. Cardone, R. Mignani, A. Petrucci, Phys. Lett. A 373 (2009) 3797] Cardone et al. answer only some minor points but avoid addressing the real issue. The information provided in their Reply displays a worrying lack of control of their experimental situation and the data they put forward as evidence for their claims. We point out several shortcomings and errors in the described experimental preparations, set-up and reporting, as well as in the data analysis. We conclude that the evidence presented by Cardone et al. is insufficient to justify their claims of accelerated thorium decay (by "piezonuclear reactions" or otherwise).

Pomp, StephanUppsala universitet,Tillämpad kärnfysik(Swepub:uu)steppomp (författare)
Sjöstrand, HenrikUppsala universitet,Tillämpad kärnfysik(Swepub:uu)hesjo677 (författare)
Traneus, E.Raysearch AB, Stockholm (författare)
Uppsala universitetTillämpad kärnfysik (creator_code:org_t)

Av författaren/redakt...: Ericsson, Göran; Pomp, Stephan; Sjöstrand, Henri ...; Traneus, E.

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