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Cold Fusion Gets a Boost From the US Navy
Posted by
kdawson
on Sun May 06, 2007 04:50 AM
from the fuse-this dept.
from the fuse-this dept.
Tjeerd writes in to alert us to the publication in a highly respected, peer-reviewed journal of results indicative of table-top fusion. The US Navy's Space and Naval Warfare Systems Center in San Diego, CA (called Spawar) has apparently been conducting research on "cold fusion" since the days of the discredited report of Pons and Fleischmann. They are reporting on the reproducible detection of highly energetic charged particles from a wire coated in palladium-deuterium and subjected to either an electric or a magnetic field. Their paper was published in February in the journal Naturwissenschaften (which has published work by Einstein, Heisenberg, and Lorenz). New Scientist also has a note about the fusion work but it is available only to subscribers.
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Hardware: New 'Stellarator' Design for Fusion Reactors 171 comments
eldavojohn writes "The holy grail of fusion reactors has always seemed 'just a few years off' for many decades. But a recent design enhancement termed a 'Stellarator' may change all that. The point at which a fusion reactor crashes is when particles begin escaping due to disruptions in the plasma. A NYU team has discovered that coiling specific wires to form a magnetic field may contain the plasma. This may be a a viable way to create a plasma body with axial symmetry, and a far better chance of remaining stable. Like other forms of containment this does require energy itself, but could bring us closer to a stable fusion reactor. It may not be cold fusion or 'table top' fusion but it certainly is a step forward. The paper is up for peer review in the Proceedings of the National Academy of Sciences."
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Figures (Score:3, Interesting)
More power to em (literally and figuratively).
Re:Figures (Score:5, Informative)
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Re:Key: Output Energy Exceeds Input Energy (Score:5, Informative)
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Energy out from the Sun: http://mdsolar.blogspot.com/2007/01/slashdot-user
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Re:Figures (Score:5, Interesting)
Parent
Re: (Score:3, Informative)
Re: (Score:3, Informative)
Incidentally, guns on ships as an offensive weapon have been pretty much obsolete since Pearl Harbour, the occasional shore bombardment mission notwithstanding. The primary naval offensive platform is the aircraft carrier, seconded by the ballistic missile carrying submarine and the guided missile armed cruiser. The old battleship is a distant fourth, if in service at all, and even the use of guns as fleet defense is being phased out in favour of destroyers and frigates armed with guided missiles.
Mart
Re: (Score:3, Informative)
Which they already have. Really, really big ones; it takes a crapload of energy to push a ship through the water quickly, too, and in order to do it, the Navy (and its contractors) have gotten good at extracting a lot of energy from either nuclear reactions or petrochemicals in short order.
A current-generation Aegis frigate has two GE LM2500 gas turbines, each producing 33,600 shaft HP, wh
Re: (Score:2)
Still interesting to power my laptop battery but maybe not enough for my jetpack.
That Depends (Score:5, Informative)
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Hot fusion now with no installation cost: http://mdsolar.blogspot.com/2007/01/slashdot-user
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Re: (Score:3, Interesting)
Not so. The first occurence (the discovery itself) was caused by a fire in the lab where the experiment was housed; the starting point of the fire was the closet that contained the cooler with the heavy water.
Several years later, probably the first replication of the effect was marked by a fire in the Palo Alto Lab containing the experiment. (To this day, both Stanford and the City of Palo Alto deny there was such a fire, but the local ne
Re:Figures (Score:5, Interesting)
Read the post. That journal is one of the best journals in the World - look at the previous contributors mentioned in the post and tell me it's not a decent journal. Just because it's German, it doesn't mean it's "sub-par". Your post should be modded down for trolling, but unfortunately I expect it'll bubble up as "Informative".
Also, most US/British journals would refuse to publish not because they doubted the ability of the scientists to produce good quality data, but because they have a knee-jerk reaction that cold fusion is junk science.
Well done to this journal for actually taking it on.
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Re:Figures (Score:5, Informative)
Also, note that the list of previous famous contributors to the journal does not cite any *current* researcher. Maybe this used to be a great journal, but it's clearly no longer the case.
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Re:Figures (Score:4, Interesting)
qrad
Ph.D. Student in Nuclear Science and Engineering
MIT
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Re:Figures (Score:5, Insightful)
racism [reference.com]: a belief or doctrine that inherent differences among the various human races determine cultural or individual achievement, usually involving the idea that one's own race is superior and has the right to rule others.
You might also consider
hyperbole [reference.com]: obvious and intentional exaggeration.
Parent
Re:Figures (Score:4, Informative)
I agree with gp, in that the journal can have a brilliant reputation, but it's probably been a while since Einstein and Heisenberg wrote articles for it.
The contents page of the issues of 2007 seems to deal more in zoology, biochemistry, ecology and palaeontology than materials science or quantum chemistry. Why was this article not published in "US military journal of applied physics" (surely there must be something like this)?
Also, I didn't read gp as being derogatory of a journal because it's in German; that would just be silly.
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Re: (Score:3, Insightful)
Of course, otherwise the question is valid. If you had proof of cold fusion, the first place you'd submit it to would normally be Physical Review Letters. Not because it's American, but because it's simply the most reputed magazine in physics.
Re:Figures (Score:5, Insightful)
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Re: (Score:3, Informative)
Re:Figures (Score:5, Interesting)
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Re: (Score:3, Informative)
Polywell operates by creating a converging potential well of tens of thousands of volts and dropping ions into it. At roughly 11,000 degrees kelvin per electron volt that's one HELL of a hot spot.
Tens of kilovolts, on the other hand, are easy to handle - in a near vacuum. The trick is to achieve sufficient DENSITY in that near vacuum and keep the particles at that temperature and pressure for enough TIME to end up with more fusion energy harvested than you put in to set uop the system.
Re:Figures (Score:4, Interesting)
--bold added
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Re:Figures (Score:5, Informative)
As an editor or a reviewer, I might well choose to publish a paper -- especially a short paper -- that documented some experimental results, even if the mechanism behind those results was unclear. Maybe there's a future paper forthcoming that either contradicts the results, or offers an explanation, nuclear or not. It makes sense to me to document the alleged evidence in the archival literature.
I want to repeat that the conclusions of the paper are very weak. The outrageous claims have been added later by the popular press. And the argument that "Einstein published there 100 years ago, so it must be true" is unworthy of repetition or rebuttal.
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Re: (Score:3, Informative)
Here's a freely available article [newenergytimes.com] that apparently explains the theory. It is cited in an erratum to the original paper. [doi.org]
curious (Score:5, Funny)
I wonder why they chose that over ASP
Re: (Score:2, Funny)
Computer geek vs. science geek battle alert!
I will take the science side any time! Web technology fads come and go, science will stay.
Re:curious (Score:5, Funny)
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Far more exciting (Score:5, Interesting)
Re:Far more exciting (Score:5, Insightful)
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LERN (Score:5, Funny)
LENR-CANR (Score:3, Informative)
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Get fusion now: http://mdsolar.blogspot.com/2007/01/slashdot-users -selling-solar.html [blogspot.com]
I hope this means ... (Score:2, Funny)
Low Energy Nuclear Reactions (Score:5, Interesting)
The "Cold Fusion" field has seen many more experimental successes: detection of neutrons, tritium, helium, transmutations of heavier elements, non-natural-abundance isotope ratios, detection of ionizing radiation. The best place to visit for an overview of the field is http://www.lenr-canr.org/ [lenr-canr.org].
Though the experiments are remarkable, no concensus on the theory has emerged yet. Nuclear reactions are clearly happening, but it is doubtful that it is conventional fusion, that is, nuclei moving fast enough to surmount their mutual Coulombic repulsion. Something seems to be screening or catalysing the reactions.
Re:Low Energy Nuclear Reactions (Score:5, Interesting)
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Re: (Score:3, Informative)
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For instance, in addition to the sub-critical nuclear terrorism angle, nuclear catalysts could cause a bit of a stir in isotopic dating.
If such a catalyst exists, geology should give us some clues: We should look for minerals composed of reaction products, but in concentrations that shouldn't exist.
Re: (Score:3, Funny)
Yes, that could be an issue... But that's absolutely, positively, NOT SCARY, in any way, shape, or form.
Video (Score:3, Informative)
I won't believe it for real until... (Score:5, Funny)
Cold Fusion (Score:3, Funny)
Method (Score:3, Interesting)
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Get solar power for what you pay your utility now: http://mdsolar.blogspot.com/2007/01/slashdot-user
Obligitory... (Score:3, Funny)
Article excerpts (Score:5, Informative)
Article Erratum (Score:3, Informative)
energy from a wire and magnetic field? Brilliant (Score:3, Insightful)
Your tax dollars at work.
I didn't bother with the article due to the subject matter being of little interest other than to show how money and minds are being wasted. IMO.
LoB
Doubtful (Score:4, Interesting)
The most amusing comment was that they were able to recreate Fleischman and Pons 'excess energy' - but pointed out that the palladium electrodes became more resistive when absorbing hydrogen and that they were using constant current power supplies (hint: Fleischman and Pons weren't monitoring the power supply voltage).
Theory (Score:4, Informative)
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Get with the times. ZPM [wikipedia.org] is the energy source of choice now. Naquadah is backup.
Either way its the Air Force that has them... (Score:2)
Budget (Score:4, Informative)
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Go solar sooner: http://mdsolar.blogspot.com/2007/01/slashdot-user
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Re:in case you were wondering the Navy's connectio (Score:4, Interesting)
signed - a cold war sub sailor
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