Comments on 'Piezonuclear decay of thorium' by F. Cardone et. al

  title={Comments on 'Piezonuclear decay of thorium' by F. Cardone et. al},
  author={G{\"o}ran Ericsson and Stephan Pomp and Henrik Sjostrand and Erik Tran{\'e}us},
Subjecting a solution of 228 Th to ultrasound (20 kHz, 100W), Cardone et al. [Phys. Lett. A 373 (2009) 1956] claim to observe an increase in the transformation or decay rate of 228 Th by a factor of 10 4 . The evidence provided seems however far from conclusive and in part contradictory to the claims made. In fact, looking at the presented data we find it cannot be taken as justification to discard the null hypothesis, namely, that the data from exposed and non exposed samples are drawn from…