A. Petrucci

Università Degli Studi Roma Tre, Roma, Latium, Italy

Are you A. Petrucci?

Claim your profile

Publications (22)11.38 Total impact

  • [show abstract] [hide abstract]
    ABSTRACT: Four cylindrical steel bars of 2 cm diameter and 20 cm height were subjected to compression cycles each of them consisting of a loading phase at fixed stress rate followed by a rapid stress release. Different compression rates were used for the same sample. The area surrounding the loaded samples was monitored in order to check whether ionizing particles were emitted. To this aim, three ZnS(Ag) detectors, a Geiger counter, and some polycarbonate CR39 detectors of alpha particles were used. An 3He proportional detector of neutrons was also used. The whole set of results is discussed and proposed as an evidence of alpha particles emission from the bars during the compression cycles.
    International Journal of Modern Physics B 09/2013; 27(23):50124-. · 0.36 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: The focus of this work is a careful chemical investigation of structural damage produced by the exposure of an iron bar to pressure waves generated using an ultrasound machine (called the R-1-S reactor). In addition to the emission of neutron bursts, the ultrasound treatment caused the appearance of zones of macroscopic damage (˜1 mm in size) on the exterior of the bar. Reflected-light optical and environmental scanning electron microscopy (ESEM) has shown that these external damage zones are characterized by microcraters and are covered by a thin layer of cracked amorphous material. Under back scattered electron (BSE) observation, this material shows a lower brightness than the intact ferrite surface. In addition, a zone with a high density of deformed cavities (˜1300 per mm2) with irregular walls and a maximum size of 10 μm was found inside the bar. These deformed microcavities are partially filled with a material composed of a chaotic assemblage of submicron-sized (most likely amorphous) particles. A careful compositional investigation of the chaotic material inside the microcavities using the semi-quantitative data obtained with the ESEM X-ray Energy Dispersive System (EDS) has shown that it is primarily composed of carbon, manganese and chromium. These elements are also found in lower amounts within the intact ferrite matrix. In contrast, the damaged surface surrounding the craters is characterized by elements not found in the ferrite at all (i.e., O, Cl, K, Cu); elements the presence of which cannot be attributed to the occurrence of non-metallic inclusions or to contamination during fabrication. These results are also difficult to explain using the generally accepted laws of physics; however, they do appear to agree with a recent theory predicting the deformation of the local spacetime and the violation of the Local Lorentz Invariance. Such a violation should occur following the collapse of micron-sized discontinuities internal to the materials (micropores) exposed to ultrasonic pressure waves resulting in an energy density to time ratio large enough to overcome the threshold predicted by the deformed spacetime theory, triggering, in this way, a new kind of nuclear reaction. Following this theory, the C-, Mn- and Cr-rich chaotic material inside the microcavities is the product of the spherically symmetrical collapse of micropores internal to the ferrite while the presence of new elements within the cratered damage zones on the ferrite surface can be attributed to the catastrophic collapse of the subsurface pore walls resulting from microexplosions.
    Applied Physics A 09/2013; · 1.55 Impact Factor
  • R. Mignani, A. Petrucci, F. Cardone
    [show abstract] [hide abstract]
    ABSTRACT: On the basis of the results of some experiments dealing with the violation of Local Lorentz Invariance (LLI) and on the formalism of the Deformed Special Relativity (DSR), we examine the connections between the local geometrical structure of space-time and the foundation of Quantum Mechanics. We show that Quantum Mechanics, beside being an axiomatic theory, can be considered also a deductive physical theory, deducted from the primary physical principle of Relativistic Correlation. This principle is synonym of LLI and of a rigid and at minkowskian space-time. The results of the experiments mentioned above show the breakdown of LLI and hence the violation of the principle of Relativistic Correlation. The formalism of DSR allows to highlight the deep meaning of LLI breakdown in terms of the geometrical structure of local space-time which, far from being rigid and at, is deformed by the energy of the physical phenomena that take place and in this sense it has an active part in the dynamics of the whole physical process. This perspective has a far reaching physical meaning that extends its consequences to the foundations of Quantum Mechanics according to the interpretation of Copenhagen. It provides a 'real' explanation and description of quantum phenomena enriching, by the concept of deformed space-time, the realistic interpretation in terms of pilot wave and hence it uncovers the reality hidden below the probabilistic interpretation and dualistic nature of quantum objects.
    05/2013;
  • [show abstract] [hide abstract]
    ABSTRACT: In this paper a new type of passive neutron detector based on the already existing one, CR39, is described. Its operation was verified by three different neutron sources: an Americium-Beryllium (Am241-Be) source; a TRIGA type nuclear reactor; and a fast neutron reactor called TAPIRO. The obtained results, reported here, positively confirm its operation and the accountability of the new developed detecting technique.
    02/2013;
  • [show abstract] [hide abstract]
    ABSTRACT: We report the results of neutron measurements carried out during the application of ultrasounds to bars of iron and steel. Like in our previous similar works with cavitated solutions of iron, neutrons were emitted in bursts and the spectrum of this peculiar emission was measured for the first time. A further and very interesting outcome of these experiments was the unexpected appearance of circular, macroscopical and regular damages on the lateral surface of the bars which was not directly in contact with the sonotrode. The superficial elemental microanalysis on these spots showed some interesting and macroscopic departures of the concentration of chemical elements from that of the undamaged surface, which may suggest that, along with the emission of neutrons, some transmutations occurred as well.
    Modern Physics Letters A 01/2012; 27(18):50102-. · 1.11 Impact Factor
  • Source
    F. Cardone, R. Mignani, A. Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: The recent measurement of the neutrino velocity with the OPERA detector in the CNGS beam, on whose basis it was found that (v-c)/c = (2.48 \pm 0.28 (stat.) \pm 0.30 (sys.)) 10e-5, does not contain any significant violation of Local Lorentz Invariance (LLI), since the corresponding value of the parameter delta=(u/c)^2-1, that represents the upper limit of the breakdown of LLI, is at least three orders of magnitude higher than the known lower limit reported in literature and is compatible with the values estimated by other experiments carried out so far.
    09/2011;
  • Source
    F. Cardone, R. Mignani, A. Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: We discuss the possibility of geometrizing interactions by exploiting the "principle of solidarity" between space-time and the physical phenomena occurring in it (formulated by the Italian matematician B. Finzi in 1955). This is accomplished by means of a deformation of the Minkowski metric, implemented by assuming that the metric coefficients depend on the energy of the process considered. Such a formalism ("Deformed Special Relativity") allows one, among the others, to deal with the breakdown of Lorentz invariance and to recover it in a generalized sense.
    09/2011;
  • Source
    R. Mignani, A. Petrucci, F. Cardone
    [show abstract] [hide abstract]
    ABSTRACT: We report and discuss the results of double-slit-like experiments in the infrared range, which evidence an anomalous behaviour of photon systems under particular (energy and space) constraints. These outcomes apparently disagree both with standard quantum mechanics (Copenhagen interpretation) and with classical and quantum electrodynamics. Possible interpretations can be given in terms of either the existence of de Broglie-Bohm pilot waves associated to photons, and/or the breakdown of local Lorentz invariance (LLI). We put forward an intriguing hypothesis about the possible connection between these seemingly unrelated points of view by assuming that the pilot wave of a photon is, in the framework of LLI breakdown, a local deformation of the flat minkowskian spacetime.
    06/2011;
  • [show abstract] [hide abstract]
    ABSTRACT: By using radar techniques over distances of 16 and 80 m, microwave propagation experiments revealed the presence of anomalous forerunners situated in advanced positions with respect to the main (luminal) peak. These results can be interpreted by a typical diffraction integral, which accounts for the existence of (fast) complex waves, which are usually considered only in the near-field region, but are still surviving beyond this limit. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26133
    Microwave and Optical Technology Letters 05/2011; 53(8):1789 - 1793. · 0.59 Impact Factor
  • Source
    F. Cardone, R. Mignani, A. Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: The purpose of this paper is to place side by side the experimental results of Piezonu- clear reactions, which have been recently unveiled, and those collected during the last twenty years of experiments on low energy nuclear reactions (LENR). We will briefy re- port the results of our campaign of piezonuclear reactions experiments where ultrasounds and cavitation were applied to solutions of stable elements. These outcomes will be shown to be compatible with the results and evidences obtained from low energy nuclear reac- tion experiments. Some theoretical concepts and ideas, on which our experiments are grounded, will be sketched and it will be shown that, in order to trigger our measured effects, it exists an energy threshold, that has to be overcome, and a maximum inter- val of time for this energy to be released to the nuclear system. Eventually, a research hypothesis will be put forward about the chance to raise the level of analogy from the mere comparison of results up to the phenomenological level. Here, among the various evidences collected in LENR experiments, we will search for hints about the overcome of the energy threshold and about the mechanism that releases the loaded energy in a suitable interval of time.
    03/2011;
  • Source
    Fabio Cardone, Roberto Mignani, Andrea Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: In this paper, we deal with the subject of piezonuclear reactions, namely nuclear reactions (of new type) triggered by pressure waves. We discuss the experimental evidences obtained in the last two decades, which can be summarized essentially as follows: experiments in cavitation of liquids, where transmutation of elements, creation of elements and emission of neutrons have been observed; emission of neutrons in brittle failure of solids subjected to mechanical pressure; alteration of the lifetime of un unstable element (thorium) subjected to cavitation. A theoretical model to explain these facts is proposed. Future perspectives of these experimental and theoretical investigations are also underlined. Comment: 61 pages, 22 figures
    09/2010;
  • Source
    F. Cardone, R. Mignani, A. Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: In this short note we would like to provide some useful remarks on our previous work about the piezonuclear decay of Thorium and in general about the methods and protocols that we used in the experiments on piezonuclear reactions. The purpose of these remarks is to highlight the critical points of the experiments and equipment in order to design future experiments that may obtain positive evidences or that can be as more comparable to previous ones as possible.
    01/2010;
  • Fabio Cardone, Roberto Mignani, Andrea Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: In a Letter appearing in this issue of Physics Letters A, Kowalski raises some critical comments on the experiment [F. Cardone, R. Mignani, A. Petrucci, Phys. Lett. A 373 (2009) 1956] that we carried out by cavitating a solution of Thorium-228. The experiment highlighted the anomalous decay of Thorium, 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. We agree with Kowalski that critical comments are one of the key factors of the process to improve the quality of experiments and the interpretation of results. However we do hope that these comments together with the details provided in the replies will promote further and better experiments which are certainly worth performing in order to shed a brighter light on this issue, as Kowalski himself suggests in his comment.
    Physics Letters A 01/2010; 374(4):698–700. · 1.77 Impact Factor
  • Source
    F. Cardone, R. Mignani, A. Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: In a paper appearing in this issue of Physics Letters A, Kowalski raises some critical comments on the experiment [F. Cardone, R. Mignani, A. Petrucci, Phys. Lett. A 373 (2009) 1956] that we carried out by cavitating a solution of thorium-228. The experiment highlighted the anomalous decay of thorium, 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. We agree with Kowalski that critical comments are one of the key factors of the process to improve the quality of experiments and the interpretation of results. However we do hope that these comments together with the details provided in the replies will promote further and better experiments which are certainly worth performing in order to shed a brighter light on this issue, as Kowalski himself suggests in his comment. Comment: Submitted to Physics Letters A
    11/2009;
  • Source
    Fabio Cardone, Roberto Mignani, Andrea Petrucci
    [show abstract] [hide abstract]
    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.
    Physics Letters A 10/2009; 373(41):3797–3800. · 1.77 Impact Factor
  • Source
    Fabio Cardone, Roberto Mignani, Andrea Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: We show that cavitation of a solution of thorium-228 in water induces its transformation at a rate 104 times faster than the natural radioactive decay would do. This result agrees with the alteration of the secular equilibrium of thorium-234 obtained by a Russian team via explosion of titanium foils in water and solutions. These evidences further support some preliminary clues for the possibility of piezonuclear reactions (namely nuclear reactions induced by pressure waves) obtained in the last ten years.
    Physics Letters A 01/2009; · 1.77 Impact Factor
  • Source
    Fabio Cardone, Giovanni Cherubini, Andrea Petrucci
    [show abstract] [hide abstract]
    ABSTRACT: We report the results of neutron measurements carried out during the application of ultrasounds to a solution containing only stable elements like Iron and Chlorine, without any other radioactive source of any kind. These measurements, carried out by CR39 detectors and a Boron TriFouride electronic detector, evidenced the emission of neutron pulses. These pulses stand well above the electronic noise and the background of the laboratory where the measurements were carried out. Comment: 3 figure, 13 pages
    Physics Letters A 12/2008; · 1.77 Impact Factor
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: We report the results obtained by cavitating water solutions of iron salts (iron chloride and iron nitrate) with different concentrations at different ultrasound powers. In all cases we detected a neutron radiation well higher than the background level. The neutron production is perfectly reproducible and can at some extent be controlled. These evidences for neutron emission generated by cavitation support some preliminary clues for the possibility of piezonuclear reactions (namely nuclear reactions induced by pressure and shock waves) obtained in the last ten years. We have been able for the first time to state some basic features of such a neutron emission induced by cavitation, namely: 1) a marked threshold behavior in power, energy and time; 2) its occurring without a concomitant production of gamma radiation.
    11/2007;
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: We report the results of a double-slit-like experiment in the infrared range, which evidence an anomalous behaviour of photon systems under particular (energy and space) constraints. The statistical analysis of these outcomes (independently confirmed by crossing photon beam experiments in both the optical and the microwave range) shows a significant departure from the predictions of both classical and quantum electrodynamics.
    10/2007;
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: We report the results of a double-slit-like experiment in the infrared range, which confirm those of a previous one by evidencing an anomalous behaviour of photon systems under particular (energy and space) constraints. These outcomes (independently confirmed by crossing photon beam experiments in both the optical and the microwave range) apparently rule out the Copenhagen interpretation of the quantum wave, i.e. the probability wave, by admitting an interpretation in terms of the Einstein-de Broglie-Bohm hollow wave for photons. Moreover, this second experiment further supports the interpretation of the hollow wave as a deformation of the Minkowski space-time geometry.
    International Journal of Modern Physics B 04/2005; · 0.36 Impact Factor