Ultrasonic / mechanical cavitation used to transmute matter

[stivep]

RESPONSE#4
https://overunity.com/8503/ultrasonic-piezonuclear-reactions/
the whole discussion
Wesley

[stivep]

RESPONSE#5
Fight who is wrong and who  is Right  :

AbstractCardone et al. [F. Cardone, R. Mignani, A. Petrucci, Phys. Lett. A 373 (2009) 1956] claim that cavitation speeds up radioactive
decay of ²²⁸Th dissolved in water.
The experimental evidence they presented was criticized by Ericsson et al. [G. Ericsson, S. Pomp, H. Sjöstrand,
E. Traneus, Phys. Lett. A 373 (2009) 3795].
This Comment focuses on a presumably-ignored trivial effect that might be responsible for the reported
experimental results. It also contains suggestions for improving the quality of future investigations.
https://www.sciencedirect.com/science/article/abs/pii/S0375960109014893
https://arxiv.org/ftp/arxiv/papers/0907/0907.0623.pdf
more  here:
https://www.researchgate.net/publication/45872090_Comments_on_the_Reply_to_'Comment_on_Piezonuclear_decay_of_thorium_Phys_Lett_A_373_2009_1956'_Phys_Lett_A_2009_in_press_Phys_Lett_A_2009_in_press_by_F_Cardone_et_al
https://arxiv.org/abs/0910.2368

[stivep]

RESPONSE#6
in response to that criticism  Cardone team  replied:
  Reply to "Comment on 'Piezonuclear decay of thorium' [Phys. Lett. A 373 (2009) 1956]" [Phys. Lett. A 373 (2009) 3795]    Cardone, Fabio;
Mignani, Roberto;
Petrucci, Andrea
  Abstract In a paper appearing in this issue of Physics Letters A, Ericsson et al. raise some critical comments on the experiment [F.
Cardone, R. Mignani, A. Petrucci, Phys. Lett. A 373 (2009) 1956] we carried out by cavitating a solution of thorium-228,
which evidenced its anomalous decay behaviour, thus confirming the results previously obtained by Urutskoev et al.
by explosion of titanium foils in solutions. In this Letter, we reply to these comments. In our opinion, the main shortcomings of the
criticism by the Swedish authors are due to their omitting of inserting our experiment in the wider research stream of piezonuclear
reactions, and to the statistical analysis they used, which does not comply with the rules generally accepted for samples with small
numbers. However, apart from any possible theoretical speculation, there is the basic fact that two different experiments (ours and
that by Urutskoev et al.), carried out independently and by different means, highlight an analogous anomaly in the decay of thorium
subjected to pressure waves. Such a convergence of results shows that it is worth to further carry on experimental investigations,
in order to get either a confirmation or a disproof of the induced-pressure anomalous behaviour of radioactive nuclides even different from thorium.
https://arxiv.org/ftp/arxiv/papers/0907/0907.0623.pdf
_____________________________________________

Wesley

[stivep]

RESPONSE#7
MIT
Massachusetts Institute of Technology:




https://www.technologyreview.com/2009/07/07/211779/can-pressure-waves-speed-up-nuclear-decay/
UncategorizedCan Pressure Waves Speed Up Nuclear Decay?If cavitation can speed up the decay of nuclei in solution, we've yet to see good evidence for it.by Emerging Technology from the arXiv archive page
July 7, 2009Is it possible to speed up radioactive decay by squeezing atoms?
In the last few months, Fabio Cardone, at the Institute of Nanostructured Materials, in Rome, Italy, and a few pals have posted on the arXiv a growing body of evidence that it is.

In March, Cardone and co reported an increase in neutron emissions when crushing marble and granite.
Their conjecture is that the crushing causes the piezonuclear fission of iron atoms into two aluminum nuclei emitting two neutrons.
But our focus today is a paper published in February, in which the team reported that cavitation–the generation and collapse of tiny
bubbles in a liquid using pressure waves–causes the rate of decay of thorium-228  in solution to increase 1,000 times.
I guess it's not entirely beyond belief that cavitation could have an effect on the nuclei of atoms in solution.
Cavitation is known to generate huge pressures and temperatures. By some theories, the energy released in this process is
close to that needed for fusion. But it's fair to say that the current consensus is that there is no good evidence that this line has been crossed in practice.
Nevertheless, Cardone's claims are interesting, and his paper was published in Physics Letters A earlier this year.
Today, however, Stephan Pomp and pals from Uppsala University, in Sweden, cast some doubt on the result and the methods used by the Cardone team in the Physics Letters A paper. 
They point out that the Cardone claim is extraordinary given the body of evidence gathered over the past 100 years about nuclear decay. Such an extraordinary claim should be backed by extraordinary evidence.
"We find that such evidence is missing in this paper and it even seems that methodological mistakes have been made," they say.
Thorium decays by emitting alpha particles. Pomp and pals say that Cardone and co placed their detector underneath the glass vessel containing the thorium solution.
"We note that the range of the emitted particles in glass is in the order of tens of micrometers and that it thus would be impossible for particles ... to penetrate the vessel."
They suggest a number of tests that Cardone and co can do to strengthen their results, such as measuring the background counts when the vessel is empty or filled with pure water in which cavitation is taking place.
It'll be interesting to see the Cardone team's reply to these criticisms; perhaps they'll be able to answer each point made by Pomp and pals.
In the meantime, the question still stands: can pressure waves accelerate nuclear decay? Not on the evidence presented by Cardone and co so far.

Ref:

arxiv.org/abs/0903.3104 : Piezonuclear Neutrons from Fracturing of Inert Solids

arxiv.org/abs/0710.5177: Speeding Up Thorium Decay

arxiv.org/abs/0907.0623: Comments on "Piezonuclear Decay of Thorium" by F.

Wesley

[stivep]

RESPONSE#8

The previous paper from 2012 of Alberto Carpinteri is taking on all together  the:
-
CAVITATION OF LIQUID SOLUTIONS
FRACTURE OF INERT AND NON-RADIOACTIVE SOLIDS
https://staff.polito.it/alberto.carpinteri/piezonuclear%20reactions%20conference/4maggio2012.pdf



(piezo)nuclear reactions in fracture and in the Italian press! in 2012
  (https://ci5.googleusercontent.com/proxy/wEJrcuivSjP-N5x4bOQxYJupMszf9ue
3RiKH8pbBfQ3UFU0Ea4LDA28QdKngotwPsShtm_wc1gNQGw53pIYsPvJLMTDO5y1
3jg=s0-d-e1-ft#https://imechanica.org/files/pictures/picture-1020.gif)   

Sun, 2012-06-17 06:48 - Mike Ciavarella
The research appears in effect controversial, and alongside previous research on sonofusion for example by
Rusi Taleyarkhan whom Carpinteri cites in his paper, despite it is well known that "
He was judged guilty of research misconduct for "falsification of the research record" by a Purdue review board in July, 2008.[2
https://imechanica.org/node/12621

Wesley