Pages

May 27, 2008

Reproducible Cold Fusion Excess Heat experiment ?


Photos and Annotations from Akito Takahashi taken at the Arata Cold fusion demonstration.

Yoshiaki Arata, a retired (now emeritus) physics professor at Osaka University, Japan, together with his co-researcher Yue-Chang Zhang, uses pressure to force deuterium (D) gas into an evacuated cell containing a sample of palladium dispersed in zirconium oxide (ZrO2–Pd). He claims the deuterium is absorbed by the sample in large amounts — producing what he calls dense or "pynco" deuterium — so that the deuterium nuclei become close enough together to fuse. Arata experiment has not been reproduced yet, but some observers believe that it seems reproducible.

After Arata had started the injection of gas, the temperature rose to about 70 °C, which according to Arata was due to both chemical and nuclear reactions. When the gas was shut off, the temperature in the centre of the cell remained significantly warmer than the cell wall for 50 hours. This, according to Arata, was due solely to nuclear fusion.

Rothwell also pointed out that Arata performed three other control experiments: hydrogen with the ZrO2–Pd sample (no lasting heat); deuterium with no ZrO2–Pd sample (no heating at all); and hydrogen with no ZrO2–Pd sample (again, no heating). Nevertheless, Rothwell added that Arata neglected to mention certain details, such as the method of calibration.




UPDATE: Follow up analysis on the amount of excess heat over time that was found




FURTHER READING
COLD FUSION UPDATE Blacklight power (a hydronos - new chemistry/physics company but one not connected to Dr Arata) claims to have a 50 KW prototype ready, which they are building factories for and expect to start deliverying and selling in 12-18 months


A twenty page description of the Arata work from 2003.

Pyncohydrogen (concentrated hydrogen described) from the Arata research paper


Paladium particle size is important


How the metallic lattice forces the gas molecules close together


The principle of the Arata reactor

1) Pycnohydrogen (ultrahigh density of hydrogen-lumps) never causes the nuclear fusion reaction.
2) Bulk metal never causes Pycnodeuterium, hence never causes the fusion reaction.
3) If materials easily form solid Pycnodeuterium, then they can cause strong solid nuclear fusion.
4) Solid Pycnodeuterium is by far the most excellent fuel for nuclear fusion, as compared with gaseous deuterium as used in thermonuclear fusion. Thermonuclear fusion requires an ultra high temperature plasma. Because a high temperature plasma requires high temperature, low density electrons, there is an excessively large Debye-shielding length and no neutralizing zone. The D-ion space charge becomes too large, just as in the vacuum state.

New Energy Times article from May 22, 2008

Photos taken at the demonstration Photos and Annotations from Akito Takahashi.

In other hot fusion news: Focus fusion has received $10 million in funding from Sweden.

11 comments:

Jonathan said...

I wonder if this will be proven false? If not, how easy is this to scale up to limitless power.

bw said...

The experimenters described the next step as attempting to scale up.

How well did the cold fusion reactor compare with hot fusion? It so happened that in 2002, laser stimulation had been used in hot fusion. With an extremely high power pulse of 10**19 watt/50 picosecond (10-12s) applied to a plasma (hot ionised gas) at a temperature of 10**4 eV, a maximum of 10**13 atoms of 4He2 were generated per pulse.

In contrast, the laser welding nuclear fusion reactor of Arata and Zhang used 300 watts, and generated 10**19 to 10**20 4He2 atoms per 10 seconds period of laser stimulation. The researchers own a patent on their reactor. At the latest International Conference on Cold Fusion which took place between 25 June and 1 July 2007, at Sochi, Russia, at least two different research groups reported replication of Arata and Zhang’s results using a variant of the procedure that involved loading D2 gas into nano-scale palladium black.

from this source

India and other countries are talking about restarting funded work.

If the process works as Arata theorizes then particles of Palladium and pressurized deuterium gas seems like straight forward things to handle. Actually having a decently funded lab and project ($100 million) and it seems that this should get rolled out in a couple of years. I see rumors in some online discussions (at Slashdot) that Arata and his group have an old Fiat factory in Italy where they are using to produce actual power generation devices.

kurt said...

Arata amd Xhang have been at this for quite a long time (since the early 90's).

I would like to see the Earthtech guys (www.earthtech.org) replicate this experiment. The Earthtech guys have a reputation of being very careful, very thorough experimenters. They have attempted to replicate all of the various "cold" fusion experiments over the years and have, so far, achieved null results.

Jonathan said...

"I see rumors in some online discussions (at Slashdot)"

*Informative*

Jonathan said...

another thing i was thinking about is the price of palladium. it looks like it is about $433 per ounce. it also looks like the global supply is at about 200 metric tons per year. If cold fusion became popular, I wonder how this would affect the supply and cost throughout the world. How much palladium would be needed to power a city of a million people?

bw said...

I do not know if the work and this stuff will pan out. Arata does not seem to be a scammer. There would certainly be easier things to scam than something like cold fusion which has so many skeptics.

If the effects and the excess heat can now be done reliably then some serious work could finally be done. This is something that I believe deserved some investigation to understand it as opposed to the emotion and resistance that is generated.

There has been talk about commercialization before so that would be a huge leap that will require serious verification.

Getting out of scorned work into valid area of study would be important.

bw said...

if this is the real deal then there will be more peer reviewed information that will follow on a regular basis

mattreynolds42 said...

Color me very skeptical. I'm not going to believe any fusion is taking place based on temperature readings alone. I'm going to need to see measurements of released neutrons or some other direct evidence of fusion taking place. Either that, or I want to see heat on the scale of melting the experiment.

I've seen some measurements of the energy involved, and frankly I don't think you can do it with 'pressurized gas'. You might could do it with things like strange matter, but to make that viable you have to find a way to keep strange matter from decaying. Good luck.

Lobo7922 said...

Imagine the way the world will change if this proves to be true.

bw said...

Reproducing a comment from futurepundit by wolfdog related to this article:

Wolf-Dog said at May 29, 2008 01:18 AM:
In your web site http://nextbigfuture.com you are talking about the possibility of cold fusion being real. It is worth writing an expanded article about the late physics Nobel laureate Julian Schwinger who wrote some papers about the feasibility of cold fusion just before he died from cancer. Schwinger claims that according to his quantum mechanical calculations, cold fusion is possible because when deuterium atoms are trapped in a palladium lattice, their proximity allows for their quantum mechanical interactions to bypass the hot fusion requirement of high energy collisions. Schwinger died from cancer in 1994, and could not finish this research, but he wrote notes on this subject until his last hours. However, his articles on cold fusion, was REJECTED by the American Physical Society (by the referees who have "connections"), and as a result, Schwinger RESIGNED from the American Physical Society to protest the censorship. Schwinger said that the censorship was because of the well established hot fusion groups who are getting government funding, and when their interests are threatened, this new avenue was suppressed. Then, before his death, Schwinger started talking with Japanese physicists in order to encourage them to do un-censored research on cold fusion, and he said that "without help from Asia, cold fusion has no future in America."


=======Research on Julian Schwinger and his cold fusion position

magazine article

5 page text of 1991 talk by Schwinger

Schwinger at wikipedia

bw said...

101 page 2007 proceedings of the Japanese Cold Fusion conference 8 (in english)

26 pages of abstracts to the JCF8 conference

A US based journal on condensed matter physics

Blacklight power claims a 50kw prototype device