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Alternative to Tokamak Fusion Reactor
Posted by
ScuttleMonkey
on Sat Nov 05, 2005 01:15 PM
from the fun-with-government-spending dept.
from the fun-with-government-spending dept.
Sterling D. Allan writes to tell us OpenSourceEnergy is reporting on a "far more feasible and profoundly less expensive approach to hot fusion". Inventor Eric Lerner's focus fusion process uses hydrogen and boron to combine into helium which gives off tremendous energy with a very small material requirement. Lerner's project apparently only requires a few million in capital investment which is a far cry from the $10 billion being spent on the Tokamak fusion project.
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Focus Fusion On Google Tech Talks 141 comments
Henning Burdack writes "Eric Lerner talks on Google Tech Talks about Focus Fusion, which would be a much cheaper and more feasible technology as a fusion energy source than any other current approach, based upon the dense plasma focus device. The technology will use hydrogen-boron fusion with direct induction of ion energy and photovoltaic conversion of x-ray emission, obviating the need of a steam-cycle and thus resulting in higher efficiencies. High temperatures of 1 billion Kelvin (100 keV) have been reached years ago. It only needs $2 million in funding and two years of research for a proof of concept, and maybe four more years for a prototype with positive energy output. In contrast to other fusion efforts it utilizes the natural instabilities of plasma instead of fighting them. Focus Fusion has been discussed on Slashdot before, and a patent application is also available, going a bit more into detail."
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Science: A Step Closer To Cheap Nuclear Fusion 404 comments
ewsnow writes "The Focus Fusion Society reports that the scientists and engineers at Lawrenceville Plasma Physics have finally built an operational Dense Plasma Focus device. While still at less than half power, they were able to achieve a pinch on their device. The small company that Eric Lerner started recently gathered enough funding to start a two-year study on the validity of his theory regarding fusion-inducing plasmoids. If the theory holds, the device will produce more electricity than it consumes. In contrast to the billions of dollars spent on Tokamak fusion (think ITER), LPP is conducting their research on a budget around a million dollars. Yet, if it works, it will provide nuclear fusion with much simpler equipment and much less cost. Eric Lerner and Focus Fusion have been discussed on Slashdot before."
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Eric Lerner (Score:2)
Re:Eric Lerner (Score:5, Informative)
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Re:Eric Lerner (Score:2)
If it's impossible for information to be destroyed, then it's impossible for information to be created. Information just exists, and is manipulated. Therefore, (convinced in my mind at least), there is no "start of universe".
Re:Eric Lerner (Score:2)
Re:Eric Lerner (Score:3, Insightful)
If it were free, sure.
If it costs millions of dollars to verify, then there are additional questions to be asked to establish whether that investment is worth it in the first place when it could go to other research studies as well.
Re:Eric Lerner (Score:5, Informative)
* "The Tokamak project" - a tokamak is a type of reactor, not a specific project. The specific project is ITER.
* "Open Source Energy Network". Yeah, that's either A) a prestegious indedpendent journal, or B) a news source that has reviewed such a journal.
Fusion is a very complex topic, and this article doesn't even begin to discuss it. Currently, fusion research projects are divided between the "big guys", such as ITER and NIF, and the "little guys" such as sonofusion, focus fusion, and interial electrostatic confinement. The "little guys" are jealous (somewhat rightfully) that the big-ticket items get funding, and their more long-shot but cheaper concepts don't get the little money that they need.
Lets back up a bit and discuss the basics. The critical forces that we're dealing with are electrostatic force and the strong force. Since you're trying to ram nuclei together, the electrostatic forces between the protons in the nuclei are going to make it incredibly difficult for you. Once you get close enough, however, the strong force (which only acts over short distances) takes over, and dominates. Thus, there is an energy barrier that you have to get over - the coulomb barrier. If your particles aren't moving fast enough, or are angled incorrectly, you just bounce off, or worse.
Worse? Well, we're not just talking about nuclei - there are electrons, too. The longer you spend in the vicinity of electrons, the more likely you are to hit them. A high energy particle that hits an electron wastes its energy as bremsstrahlung. It's also possible to lose energy from the core through synchrotron radiation.
By the numbers, it looks like it'd be almost impossible to do. Thankfully, you have to big things working to help you out. One, particles in the core do not all share the same energy level; in fact, they'll vary by orders of magnitude from each other. So, while most of your core will be well below the required energy level, a few particles will be very energetic. The other thing that helps you out is quantum uncertainty - basically, since the positions can be uncertain, you can effectively tunnel past the coulomb barrier.
Even still, it's an incredibly difficult problem. Stars cheat - they have gravitational confinement, making the problem quite easy to keep a tight, hot core. However, for us, all of the energy of the particles (and new energy released by fusion reactions) is incredibly hard to keep close together.
The energy barrier depends on what reaction your looking at. Dt-Dt fusion is pretty low; so is Dt-T. Fusion involving helium takes a lot more energy, and wonderful fusion methods like B11-P (you can capture almost all of the energy released) take a huge amount of activation energy.
Inertial confinement, like ITER, uses strong magnetic fields and fast-moving plasma. Charged particles moving through a magnetic field experience a force perpendicular to the direction of motion and the magnetic field, called Lorentz Force. The interesting thing about it is that it seems to scale up well; the downside is that scaling up means massive devices. Things like B11-P fusion are really right-out for now because of how much you'd have to scale up. But there's good confidence that it will work.
Inertial electrostatic confinement fusion involves spherical acceleration of ions in a near vaccuum. If they miss colliding with other ions, they just bounce outward then fall back inwards for another pass. There are few electrons in the fuel to waste through bremsstrahlung. The problems are getting density and stopping collisios with the inner coil that attracts the ions to the center. Whether it's possible to overcome is a big question. As a note, these are popular for amateurs to build - see "Farnsworth Fusor". Since the devices are inherently small, they would scale to B11-p fusion.
Focus fusion involves trying to get magnetic vortices that are incredibly intens
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Focus fusion (Score:5, Interesting)
Parent
Re:Eric Lerner (Score:5, Interesting)
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Re:Eric Lerner (Score:3, Insightful)
Let me highlight the areas t
Re:Eric Lerner (Score:5, Insightful)
That is bizzare. I'm really at a loss to explain such a statement, though, IANAP. Obviously fusion bombs work and DO produce far more energy than they consume and ICF is capable of doing the same or this [llnl.gov] would not be currently under construction. I can't understand what he may have meant by such a statement. weird.
Parent
Re:Eric Lerner (Score:3, Informative)
Ahhh! Somebody has to shoot those worse than useless science teachers or imbecile media from which people get these ideas. There are an overabundance of people who think a theory is a concept that somebody came up with and a fact (or truth) is a theory that has been proven to be true. This is garbage. Science doesn't deal in facts. It's all models of how reality works. Newton wasn't wrong. His model works a
Re:A Dialog (Score:3, Interesting)
Re:Eric Lerner (Score:3, Interesting)
modern reactor emergency shutdown systems are usualy designed to drown the reactor core in boron to end the chain reaction immediately in the event of an "un-requested fission surplus"
random fact for the day & Obligatory Simpsons quote all in one
Can any one say "Cold Fusion" (Score:2, Insightful)
Roads? Where we're going we don't need roads ... (Score:5, Funny)
"The Dense Plasma Focus device is roughly the size of a coffee can."
Size of a *coffee* can
MR. FUSION!
Yes! FINALLY!
Re:Roads? Where we're going we don't need roads .. (Score:2)
The last time I checked there was vacuum betwee
Re:Roads? Where we're going we don't need roads .. (Score:3, Funny)
Re:Roads? Where we're going we don't need roads .. (Score:3, Informative)
It's like walking on coals. Coals get red-hot at about 600 degrees Farenheit, due to black body radiation. People can walk on them, though, because human flesh is much denser. (It also helps if you do it right after the morning dew, and it's a bad idea to linger.) The coals are hot but the total amount of energy isn't that high.
It's a bit like having a very high voltag
Reverse Particle Accelerator (Score:5, Insightful)
The neat thing is that the reaction ejects beta radiation (electrons) in all directions, but ejects the alpha particles with the plasma in one direction. The actual fusion generator is the size of a refrigerator, with the coffee can near one end. The larger device captures the beta radiation with a shell around the reactor and has a target at the other end to collect the alpha radiation. The result - fusion reaction produces current directly! The next refinement *decelerates* the speeding alpha particles through a magnetic field, converting their kinetic energy to electricity before it heats up the target. That is the "reverse particle accelerator" aspect. Beta radiation ejected in the same direction as the alpha beam is "lost" and becomes heat at the target. Future refinements will make the alpha beam as narrow as possible so as to minimize the number of beta particles it takes with it.
After the proof of concept, engineering challenges include materials to collect beta radiation without becoming dangerously radioactive, materials to collect alpha radiation (hopefully low speed after magnetic decceleration) without becoming dangerously radioactive, and shielding to stop the occasional neutrons (from impurities, and the random nature of nuclear reactions). Will also need to store energy to "crack the magnetic whip" to drive the reaction, and meter precise amounts of ionized fuel. I'm not convinced that too much fuel won't be dangerous.
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Potential dangers for home fusion (Score:5, Interesting)
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Skeptical.... (Score:5, Funny)
And yet... not assasinated by the oil industry...
So it must not actually work. Q.E.D.
Re:Skeptical.... (Score:2, Informative)
Re:Skeptical.... (Score:2)
He is a perfect fit with tabloid web sites like slashdot.
Re:Skeptical.... (Score:2)
Q.E.D. = Quite Easily Demonstrated.
Re:Skeptical.... (Score:2)
And yet... not assasinated by the oil industry...
From article...Lerner's persistent quest to find other federal monies has thus far been unfruitful. "This administration does not want to fund any serious competitor to oil or gas,"
Why assasinate when you can just cut off monies? Very effective and much cleaner than killing.
I'm suspicious (Score:5, Funny)
Sounds like something Mr. Burns would say.
Re:I'm suspicious (Score:2)
Equal time for cranks? (Score:4, Insightful)
Re:Equal time for cranks? (Score:3, Insightful)
Wow. They'll save the earth. (Score:2, Funny)
Too bad NASA's funding funding for him dried up. What do they know about physics, any way?
Send in the Clowns! (Score:3, Funny)
I recall when Cold Fusion was actually considered a possibility for essentially limitless clean energy that a bunch of environmentalist clowns arrived on the scene proclaiming that cheap clean energy would be the worst thing that could possibly happen. That, my Gawd, with cheap clean energy we would just end up with more people using up even more of the planet even faster. While my memory may have faded over time, a prominent name I believe was at the forefront of these claims at the time was Jeremy Rifkin.
I certainly expect their reappearance any time now.
Re:Send in the Clowns! (Score:3, Interesting)
And I certainly have no interest in pleasing Jeremy Rifkin or anyone like him. I thought once of buying him a pair of wooden clogs, like the ones a certain group of people used to throw into factory machinery.
It doesn't seem occur to people like this that an unlimited power source would open up the entire solar system for exploitation. Regardless, countries like China and India are "using up even more of the planet even faster" without such an energy source,
Mmmmm... astroturf (Score:5, Insightful)
Open Source Energy News -- Exclusive Interview
I suppose occasionally major scientific advances are announced in press releases, but since 99.999% of the time it's somebody jumping the gun, I think I'll let it go.
I do find it interesting that the article describes him as an "inventor" rather than a "physicist". Somehow when proposing a radically different model of the universe, the former always rings of "I was puttering around and I found something I didn't understand, therefore it must be both correct and completely novel."
None of this is proof that he's wrong, but the crank-o-meter is pushing towards the red zone. Which is too bad, because apparently he's an extremely smart man with a lot of valid research to his name.
Cooks and crackpots (Score:5, Informative)
Re:Cooks and crackpots (Score:3, Insightful)
Now if this is such promising stuff here then why has it been collecting dust for the past three years? Perhaps our local plasma experts can wade through the technical data in the above mentioned paper and enlighten the rest of us.
Business plan? (Score:2)
For all of the fundamental engeneering problems of hot fusion? I really doubt it.
Interesting (Score:5, Interesting)
Magnetic reconnection [pppl.gov] in traditional fusion reactors is seen as a bad thing because it shoots particles in unpredictable directions that often can't be contained by the confining magnetic fields. So it results in a loss of plasma density and also eventually puts small holes in the sides of the reactor.
If these particles are that energetic it seems to make sense that they could be used to heat the plasma if they could be controlled. No idea if they are energetic enough to be used alone though.
That magnetic reconnection thingy is also what causes the northern lights.
site with more information (Score:2)
It is not cold fusion, but one of the many alternatives [plasmas.org] to the tokamak. Although a tokamak is still seen als the best candidate for a earthly fusion reactor.
Oh, nobody happens to have a job opening in plasmaresearch for a newly graduate?
If I trust the physics papers on the web (Score:5, Informative)
(a) yes, H-B fusion (aneutronic) is possible, but...
(b) it requires very high temperatures, and suffers from a variety of energy loss mechanisms which make getting usable energy from it difficult. This is similar to when I was in grad-school, and everyone was whispering about Muon-catalyzed fusion, which turned out to be impractical for energy extraction as well.
IANA(N/P)P (i am not a nuclear/plasma physicist), but the papers I skimmed suggest that you could use this method, mixed with a conventional Deuterium/tritium mixture, to get cleaner fusion and better burn rates. Of course, not being a physicist, it's possible that the journals I found the citations in are the physics equivalent of Journal of Pointless Chemistry.
http://scitation.aip.org/getabs/servlet/GetabsSer
http://www.sciencedirect.com/science?_ob=ArticleU
Probable Translation: Another backyard inventor who can read enough of the literature to be encouraged, but not enough to admit the drawbacks.
Secondary Translation: I canna' change the laws of physics, Captain.
Slashdot Needs a Science Editor (Score:5, Insightful)
As a scientist I'm dismayed by the number of people who always believe in science conspiracies (like here where he says the only reason he didn't get funding was the tokomak). It's hard to decide how useful this method really is from the article as it's not a science article, but I have some doubts.
What people need to realize about science like this is that if he can make this work he will be lauded and made very rich. Although science does make mistakes, occasionally supporting wrong theories and such, overall it progresses by natural selection (and those who are correct get high end jobs because of it). I would love to disprove dark matter or dark energy because that would make me really well known. But yet I read about how the entire field of astronomy is so stuck on it that they won't look at other possibilities (but we do and they don't work with what we know).
If this guy is correct he should be able to convince most other scientists in his field (which he hasn't been able to do). This isn't always due to science (some people can't communicate and sometime politics plays a role) but generally it is.
I wonder how many theories have been posted on slashdot now that are just like this. Slashdot has been around long enough that someone could go back and look at the current state of these theories. How many are still, "waiting for that big moment" even after they go some funding. More importantly, I think slashdot should make more of an effort to put up articles when they show something has been disproved (like that article a few weeks ago arguing against dark matter in galaxies which used the wrong gravitational potential). Somebody with a science background should at least edit the original slashdot post so that people could get a better background before deciding that the future of energy production is safe.
call me a sceptic, but... (Score:5, Interesting)
In addition, Eric Lerner is a believer in the plasma universe theory; he wrote a book on the matter called 'the Big Bang Never Happened', which apparently makes him popular with the evolution-denier crowd. Again, questionable associations.
He's also criticised [aip.org] the peer-review scientific process, calling it open to fraud. Just unfortunate that peer-review has not been kind to his own research, I imagine.
I'm no physicist, but it seems his process passes a short, extremely high current from a coffee-can sized copper electrode through a low-pressure hydrogen-boron mix.
The current's magnetic field forms a small hot ball of plasma, a plasmoid, (without external magnets) and when the current's magnetic field collapses it induces an electric field that heats the plasmoid so much, it ignites fusion reactions that create more electrons & ions, which can be converted back into electricity via an advanced transformer that converts an ion stream to electricity.
So basically, pass an electric current though low-density hydrogen-boron in a coffee can, and you get spontaneous fusion - so much so, you get over-unity? Somehow, it strikes me as a little too easy to be true.
Shockingly enough, Lerner has yet to demonstrate over-unity, but that's because the government is so in bed with the oil-companies, they won't give him any money. NASA gave him some money, looked at his results, and dropped him.
I won't call him a junk-scientist, but I think I'd like to see some peer-reviewed and repeated evidence of his results before I lend his theories much credence.
Integrity Research Institute (Score:5, Informative)
The glowing praise in the article comes from the Integrity Research Institute,
which doesn't even have its own domain name: http://users.erols.com/iri/>
The web site lists three directors:
Director 1: (also President and Chairman) Dr. Thomas Valone
Physics, engineering, and teaching background
Sounds good.
Inventer of the Photonic Rejuvenation Energizing Machine and
Immunizing Electrification Radiator
what the fuck?
Director 2: Jacqueline Panting Valone
General Manager of M.A.M.S.I., a representative of several suppliers of
microwave components and subsystems to OEM, military and commercial
companies.
Could have a solid technical background.
Ms. Valone is also a strong advocate of holistic health, including
electromagnetic medicine and is responsible for the Health programs
of our Institute.
Holistic health seems respectable. I am more than my symptoms.
But "electromagnetic medicine?" Give me Maxwells Equations,
not new-agey energy-fields-surround-us.
In her spare time, she volunteered for The Hospice Program of Broward
County where she assisted patients in their transition and helped family
members cope with their loss.
Very important work. She sounds like a good person.
Ms. Valone is a doctorate candidate of Naturopathy at Trinity College of
Natural Health and is certified through the College of Natural Health
Professionals, CNHP.
Never heard of them. What does this have to do with physics?
Director 3: Wendy Nicholas
EDUCATION
2001 Johns Hopkins University Rockville, MD
* Continuing Education student in Telecommunications
May be a wonderful, capable person. Why is she on the board of directors?
what a crock! (Score:3, Insightful)
Here's a hint:
1. Publication-by-press-release
2. Few to none serious scientific citations
3. Brilliant technology that would change the world but for government conspiracy to keep him down
4. known nutjob that is ignored by the scientific community
We have a winner! He's a nutjob!
I'm dying to see a working commercial fusion reactor too, but let's try to keep a healthy sense of scientific skepticism.
DUDE (Score:3, Insightful)
STOP POSTING THIS CRAP.
This isn't news - or anything it's just junk science written up by people who manage to take other people's money [focusfusion.org] and waste it in the name "science".
Re:Byproducts (Score:2)
And it looks like it can be built as long as there's no "political" objection.
Re:Securing funding (Score:2, Troll)
I'm sorry but Shell, Exxon? That is the government.
Re:Securing funding (Score:3, Informative)
Re:Of Plasmaks and Prizes (Score:5, Informative)
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Re:Of Plasmaks and Prizes (Score:5, Funny)
no one ever called you a person who has done real work.
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Re:Maybe, maybe not (Score:3, Interesting)
Not all "services" can be economically automated, even with unlimited cheap energy. Without centralized control of life's necessities (energy, food, housing, etc.) there would be no incentive for anyone to participate in the "service" economy. Without limits on those necessities, there