Inverted PolyWell?

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Santiago Arcila
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Inverted PolyWell?

Post by Santiago Arcila » Sun Nov 21, 2021 8:18 pm

This idea came from thinking about what would happen if free electrons were injected to a sealed dielectric container,

Instead of creating a cloud of electrons in the center and locking it with fields, let a highly dielectric container build up an electron shell on its walls by thermionic emission. If a low pressure hydrogen gas is contained within (with a high ratio of electrons in the shell vs. atoms of the gas) , some of its atoms would ionize near the walls when its electrons are trapped by the shell, these freed protons would start being attracted to the walls sometimes bouncing at accelerations enough to pass a now lowered Gamow window by perturbations of the shell. If the wall has a thin layer of boron-11 or lithium-7, there would be chances of aneutronic fusion if protons cross the shell. Proton-proton chains could happen if bouncing protons collide between themselves. If there are sharp edges in the surfaces, proton collision between edges would further accelerate free protons.

Using 'Particle Simulator' App by Alfredo Prades I've played with the idea to check it visually. It only simulates 'electronic' attract/repell and collisions with the walls. Here's how it simulates a low pressure gas: https://youtube.com/shorts/zv6dA8GTDxs?feature=share And a short simulation of the charged container: https://youtube.com/shorts/IpKTaORxcVI?feature=share Check at the top right a bouncing proton in the corner, and at the left the bouncing 'free' protons.

Patrick Lindecker
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Re: Inverted PolyWell?

Post by Patrick Lindecker » Mon Nov 22, 2021 1:00 pm

Hello Santiago,

The maximum cross section for p/B11 is equal to 1.2E-28 m2 against 5E-28 m2 for D/T. Moreover this maximum is located at a center-of-mass energy of 600 keV (versus 65 keV for the D/T fuel).
Collisions of protons (as let's say several keV) with the Boron-11 thin layer will produce several aneutronic fusions for sure, but much more probably heat by simple collisions. The global efficiency will be extremely low (probably of the same order of a fusor, i.e. 1E-9).

Patrick Lindecker

Santiago Arcila
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Re: Inverted PolyWell?

Post by Santiago Arcila » Mon Nov 22, 2021 5:13 pm

Patrick thanks a lot for reminding of those constraints, but much more for considering there could be fusion in this setup.
Patrick Lindecker wrote:
Mon Nov 22, 2021 1:00 pm

The global efficiency will be extremely low (probably of the same order of a fusor, i.e. 1E-9).
Yes, about efficiency, I've been wondering how to calculate it... Since this concept is more like a passive setup, of just creating an electron shell once and then let the reactions just happen from then on...

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Richard Hull
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Re: Inverted PolyWell?

Post by Richard Hull » Mon Nov 22, 2021 7:29 pm

Once again all fusions are easy if you just want fusion to occur and have the materials and energy to make it happen. Our motto is "fusion is easy", as it is a true statement. When one speaks of net energy fusion plasma power gain that is another matter, (break-even). Break even is a distant goal with any combination of fusion fuels. P-B11 is a joke related to any useful fusion process.

There is another goal far distant beyond break-even. This is net power gain of input energy to distributable electrical energy out. This relates to the electrical industry's interest in accepting fusion future energy possibilities. The electrical industry has accountants and "bean counters" and they do their job to secure profits for the producers that hire them.

Among the chief concerns is how many times over break-even will the recoverable, distributable electrical energy have to be, after construction costs, to make coal and gas fired plants obsolete at producing power at the same cost or less using fusion power plants.

A 20X return on the energy input to the fusion reaction beyond break even might entice them if the cost of the fusion system can be amortized over time to beat coal and gas. Thus a 20 gigawatt fusion facility might require a 1 gigawatt coal, gas or fission reactor to power it.

Fusion sounds nice until the profit margin is considered. The electrical industry is driven solely by profits not ideals and green energy. These niceties come last in any considerations related to how they generate energy for their paying consumers.


Efficiency, costs and, profits are the sole goal in energy production by the industry as they know that $2.50/KWhr electricity from pure green renewables will never happen. They are in the $0.10-0.20 /KWhr range and so are their consumers. Currently, at my home here in Virginia, if I use under 1 megawatt/hour of electricity per month, I am billed at the rate of 11.6 cents per kilowatt-hour

Sorry to drift so far off the physics of fusion to the future realties around it. Again, the struggle to merely do fusion is forever and easy one. To make fusion "Do Something" is, yet, a distant dream.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

Santiago Arcila
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Re: Inverted PolyWell?

Post by Santiago Arcila » Mon Nov 22, 2021 9:00 pm

Thanks Richard, I guess... Are you sure you were replying to this thread? I mean, yes, nvm, it's relevant. Breakeven and net energy gain. The setup I'm proposing would be for a small device, mostly for continued thermal output: It'd be started by thermionic emission for some time to build up the electrons shell, so basically the input energy would be finite (ideally), and equal to the self-energy of the container for when the number of electrons is greater than hydrogen atoms within. If fusion does happen in such a setup, I believe it'd be a matter of time and fuel availability until breakeven is reached. However, on the issue of useful output, it's something I'm still trying to check if it might be possible.

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Richard Hull
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Re: Inverted PolyWell?

Post by Richard Hull » Mon Nov 22, 2021 9:23 pm

Ideas regarding fusion are $1.00 per 100. Action on those ideas is always 0.000. I always say build, it test it, and report back on how the idea worked out, giving us extensive data regarding the entire effort. Press releases not accepted at all. We've got a fist full of press releases about this or that new fusion idea and they all sound like they might work.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

Santiago Arcila
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Joined: Sun Nov 21, 2021 7:07 pm
Real name: Santiago Arcila

Re: Inverted PolyWell?

Post by Santiago Arcila » Mon Nov 22, 2021 10:26 pm

Well, I think that's the encouragement I was looking for. As energy in a vacuum, I wouldn't say action on fusion ideas is always 0 tho'. Thanks.
It's just tedious not having anyone to bounce back ideas and develop something in a self echo chamber. I'll better get back to the lab.

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Richard Hull
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Re: Inverted PolyWell?

Post by Richard Hull » Tue Nov 23, 2021 4:35 pm

The sad part of fusor.net is that ideas that sound really good are never tested unless there is a person with a budget, mostly out of pocket, that can actually test the idea, be it their own idea or someone else's. It is true that money feeds all research....It also stops it in its tracks. Thinking outside the box is great but remember, all ideas are themselves trapped within a box, a huge box! The money box!

I seem to stomp on many ideas only in that, be they good or bad, they will never be tested. Certainly never tested by the person with the idea here and that is sadly very frustrating for a person use to taking an idea or concept and doing something about it.

We are mostly serious "doers" here. Complex fusion ideas just can't be tested by the amateur fusioneer, forever trapped within the money box. Few here remember Mark Suppes who came here and got funded with more than a million dollars to test out his fusion ideas. He rented a large building and built a lab with top grade gear and instruments. He made the usual splash in the news, nation wide. He kind of outgrew fusor.net, playing in the "big time". We didn't hear much from him or about his efforts for about 1 year. Then, suddenly, he placed an ad in our trading post looking to sell all that nice gear, piece by piece. I doubt if anyone here at fusor.net bought such expensive, nearly brand new top flite gear.

Real fusion energy research can't even underway for a 20 million dollar commitment. I am sure the giant corporation, Lockheed, has already dumped far more than this into their work of fusion energy and still seem to be committed to their dream. The dream always seems to be just around the bend. It costs ever more money to go around that bend even after spending millions to arrive at that bend.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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