E-cat

Pacalici a scris:Ati auzit vorbindu-se de E-cat? Daca da, ce anume stiti ?

Pacalici a scris:http://peswiki.com/index.php/Directory:Andrea_A._Rossi_Cold_Fusion_Generator

omuldinluna a scris:In completarea celor spuse de Pacalici, din cate imi amintesc nici macar Fleishcmann & Pons nu au putut sa-si reproduca propriile rezultate in experimente ulterioare, astfel ca ori au gresit in masuratorile initiale si s-au grabit, ori au dezinformat voit.

omuldinluna a scris:Mai, nu critica nimeni aici, dar sunt niste realitati. S-au cheltuit sute de milioane de dolari, daca nu s-a ajuns chiar la ordinul miliardului, in directia aceasta de cercetare la inceputul anilor '90, si nu s-a ajuns la nici un rezultat. Am verificat acum inca odata ce am scris mai sus si e intradevar asa, nici macar F & P nu au reusit sa-si reproduca descoperirea initiala, ceea ce inseamna ca cel mai probabil s-a datorat ori muncii neglijente in laborator ori unei defectiuni tehnice. Adu-ti aminte ca si neutrinii au fost superluminici din cauza unui cablu defect.

omuldinluna a scris:Mai, nu critica nimeni aici, dar sunt niste realitati. S-au cheltuit sute de milioane de dolari, daca nu s-a ajuns chiar la ordinul miliardului, in directia aceasta de cercetare la inceputul anilor '90, si nu s-a ajuns la nici un rezultat.

omuldinluna a scris:. Ce-i impiedica sa genereze energie prin fuziune la rece, atunci?

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How can 30% of nickel in Rossi’s reactor be transmuted into copper?

by Dott. Giuliano Bettini
Retired. Earlier: Selenia SpA, Rome and IDS SpA, Pisa
Also Adjunct Professor at the University of Pisa
Adjunct Professor at Naval Academy, Leghorn (Italian Navy)

Abstract
In the present article I would like to answer a question posed by L. Kowalsky in a recent paper: how can 30% of nickel in Rossi’s reactor be transmuted into copper? “Everything should be made as simple as possible, but not simpler”, says a guy. I apologizes if I am too simplistic here.
Introduction
The interest on Andrea Rossi’s Nickel-Hydrogen Cold Fusion technology is accelerating [1]. However, Rossi says that about 30% of nickel was turned into copper, after 6 months of uninterrupted operation. Kowalski [2]. says that “this seems to be impossible because the produced copper isotopes rapidly decay into Ni”. But how it works?


How it works
Following Focardi Rossi [3]. a Ni58 nucleus produces a Copper nucleus according to the reaction

Ni58 + p → Cu59

Copper nucleus Cu59 decays with positron (e+) and neutrino (ν) emission in Ni59 nucleus according to

Cu59 → Ni59 + ν + e+

Then (e+) annichilates with (e-) in two gamma-rays

e- + e+ → γ + γ

Starting [3] from Ni58 which is the more abundant isotope, we can obtain as described in the two above processes Copper formation and its successive decay in Nickel, producing Ni59, Ni60, Ni61 and Ni62. Because Cu63, which can be formed starting by Ni62, is stable and does not decay in Ni63, the chain stops at Ni62 (i.e. Cu63). Each process means some MeV.

Of course how can a proton p gets captured by the Ni58 nucleus? (and subsequent Ni59, Ni60, Ni61 and Ni62). Following Stremmenos [4]. a neutron-like particle, an electron proton pair, a mini-atom, a proton masked as a neutron, gets captured by the Ni58.

If the masked proton becomes a neutron the result is Ni59.
In order to have Cu59 (increase of atomic number from 28 to 29) the electron (of the masked proton) gets ejected from the nucleus. The masked proton becomes a proton.

The same process holds for all the subsequent transformations, until Cu63.
It remains to be understood the issue of the gamma radiation in the MeV range.

Numbers
I am an electronic engineer, so I need easy numbers in order to understand.
However “Everything should be made as simple as possible, but not simpler”, says a guy. Maybe I am too simple here.
Let’s calculate.

MeV for each Ni transformation
I read that starting from Ni58 we can obtain Copper formation and its successive decay in Nickel, producing Ni59, Ni60, and Ni62. The chain stops at Cu63 stable.
For simplicity I assume all the Nickel in the reactor in the form Ni58.
For simplicity I suppose for each Ni58 the whole sequence of events from Ni58 to Cu63 and as a rough estimate I calculate the mass defect between (Ni58 plus 5 nucleons) and the final state Cu63.
Ni58 mass is calculated to be 57.95380ą 15 amu
The actual mass of a copper-Cu63 nucleus is 62.91367 amu
Mass of Ni58 plus 5 nucleons is 57.95380+5=62.95380 amu
Mass defect is 62.95380-62.91367=0.04013 amu
1 amu = 931 MeV is used as a standard conversion
0.04013×931 MeV=37.36 MeV
So each transformation of Ni58 into Cu63 releases 37.36MeV of nuclear energy.


Nickel consumption
According to many blogs in the Internet “One hundred grams of nickel powder can power a 10 kW unit for a minimum of six months”.
How much of Ni58 should be transformed, in six months of continuous operation, in order to generate 10 kW?
I follow a procedure outlined in [2].
10 kW is thermal or electrical (?) power. The nuclear power must be larger. Assume a nuclear power twice:
20 kW = 20,000 J/s = 1.25 x 10**17 MeV/s.
Each transformation of Ni58 into Cu63 releases 37.36MeV of nuclear energy.
The number of Ni58 transformations should thus be equal to (1.25 x 10**17)/37.36 = 3.346 x 10**15 per second.
Multiplying by the number of seconds in six months (1.55 x 10**7) the total number of transformed Ni58 nuclei is 5.186 x 10**22.
This means 5 grams.
The order of magnitude is not exactly the same but seems to be plausible. This means also 5 grams of Nickel in Rossi’s reactor transmuted into (stable) Copper after six months of continuous operation at the rate of 10 kW.

Conclusions
Rossi says that about 30% of nickel was turned into copper, after 6 months of uninterrupted operation. At first glance this seems to agree with calculations based on simple assumptions.

References
[1] Link, Cold Fusion “Andrea Rossi” Method
[2] L. Kowalski, “Rossi’s Reactors Reality or Fiction?”, March 2011
[3] A.Rossi, S. Focardi, http://www.journal-of-nuclear-physics.com
[4] E. Stremmenos, “Hydrogen/Nickel cold fusion probable mechanism”, March 2011

Pacalici a scris:

Nici un fel de radiatie nu s-a putut detecta in apropierea reactorului lui Rossi!