Cold-fusion demonstration: an update (Prof. Arata's recent demonstration)

physicsworld. ^ | June 16, 2008 8:50 AM. | By Jon Cartwright

[dennisw]

 

This is a follow-up to exciting cold fusion demonstration of last month. 
PHOTOS-A public demo open to the media and skeptic by professor Arata of Japan

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Yoshiaki Arata receiving Preparata Award in 2007
Photo: S.B. Krivit

By Jon Cartwright

Several of you have asked when I'm going to give you an update on Yoshiaki Arata's cold-fusion demonstration that took place at Osaka University, Japan, three weeks ago. I have not yet come across any other first-hand accounts, and the videos, which I believe were taken by people at the university, have still not surfaced.

However, you may have noticed that Jed Rothwell of the LENR library website has put some figures with explanations relating to Arata's recent work online. I've decided to go over them and some others here briefly to give you an idea of how Arata's cold-fusion experiments work. It's a bit more technical than usual, so get your thinking hats on.

Above is a diagram of his apparatus. It comprises a stainless-steel cell (2) containing a sample, which for the case of the demonstration was palladium dispersed in zirconium oxide (ZrO₂–Pd). Arata measures the temperature of the sample (T_in) using a thermocouple mounted through its centre, and the temperature of the cell wall (T_s) using a thermocouple attached on the outside.

Let's have a look at how these two temperatures, T_in and T_s, change over the course of Arata's experiments. The first graph below is one of the control experiments (performed in July last year) in which hydrogen, rather than deuterium, is injected into the cell via the controller- (8) operated valve (5):

At 50 minutes — after the cell has been baked and cooled to remove gas contamination — Arata begins injecting hydrogen into the cell. This generates heat, which Arata says is due to a chemical reaction, and the temperature of the sample, T_in (green line), rises to 61 °C. After 15 minutes the sample can apparently take no more hydrogen, and the sample temperature begins to drop.

Now let's look at the next graph below, which is essentially the same experiment but with deuterium gas (performed in October last year):

As before, Arata injects the gas after 50 minutes, although it takes a little longer for the sample to become saturated, around 18 minutes. This time the sample temperature T_in (red line) rises to 71 °C.

At a quick glance the temperatures in both graphs, after saturation, appear to peter out as one would expect if heat escapes to the environment. However, in the case of deuterium there is always a significant temperature difference between T_in and T_s, indicating that the sample and cell are not reaching equilibrium. Moreover, after 300 minutes the T_in of the deuterium experiment is about 28 °C (4 °C warmer than ambient), while T_in/T_s of the hydrogen experiment is at about 25 °C (1 °C warmer than ambient).

These results imply there must be a source of heat from inside the cell. Arata claims that, given the large amount of power involved, this must be some form of fusion — what he prefers to call "solid fusion". This can be described, he says, by the following equation:

D + D = ⁴He + heat

(According to this equation, there should be no neutrons produced as by-products — thanks to those of you who pointed this out on the last post.)

If any of you are still reading, this graph below is also worth a look:

Here, Arata also displays data from deuterium and hydrogen experiments, but starts recording temperatures after the previous graphs finished, at 300 minutes. There are four plots: (A) is a deuterium and ZrO₂–Pd experiment, like the one just described; (B) is another deuterium experiment, this time with a different sample; (C) is a control experiment with hydrogen, again similar to the one just described; and (D) is ambient temperature.

You can see here that the hydrogen experiment (C) reaches ambient temperature quite soon, after around 500 minutes. However, both the deuterium experiments remain 1 °C or more than ambient for at least 3000 minutes while still exhibiting the temperature difference between the sample and the cell, T_in and T_s.

Could this apparently lasting power output be used as a energy source? Arata believes it is potentially more important to us than hot or "thermonuclear" fusion and notes that, unlike the latter, it does not emit any pollution at all.

Posted by Jon Cartwright on June 16, 2008 8:50 AM | Permalink

 

 

COMMENTS HERE--->>>
http://physicsworld.com/blog/2008/06/coldfusion_demonstration_an_up_1.html

 

[dennisw]

More here-——>>>

http://www.newenergytimes.com/news/2008/NET29-8dd54geg.htm#sputnik

[dennisw]

Zhang is that woman? LOLOL

[dennisw]

I see your home page has some “economic nationalist” material on trade. Amusingly enough Arata is described as a “strong nationalist”

MEANING— He has an incentive to get his country away from depending on idiot nations for its oil and energy. Japanese are very clever. Why should they be jerked around by Arab & Russian dumb asses? Why should we?

[The_Media_never_lie]

Arata states that no input energy is required for the experiment, aside from the energy required to create the initial vacuum and gas pressure and to bake the powder to remove impurities.

I'm certainly no physicist or chemist, but is there some kind of chemical reaction going on? How much energy consumed here vs. amount released?

[dennisw]

“Free energy” and it is nuclear. As in cold fusion

Not chemically produced

[Kevmo]

How Can Cold Fusion Be Real,
Considering It Was Disproved By Several
Well-Respected Labs In 1989?
Steven B. Krivit, Editor
New Energy Times

http://www.newenergytimes.com/Library/2005KrivitSHowCanItBeReal.pdf
12th International Conference on Emerging Nuclear Energy Systems

http://www.lenr-canr.org/acrobat/KrivitShowcancolda.pdf
Bruxelles, Belgium, August 21-26, 2005