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Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

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Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#101
post #54
post #41

Earlier quoted context omitted.

It's not often that the child in me goes "that's awesome!", but this is one of those times.

Assuming you're talking about the temperature, it's always been a source of human pride to me that the hottest place in the entire universe, as far as we are aware, has been created at the LHC on Earth. Barring other species as intelligent as ours elsewhere (which is of course possible, but unknown), the very hottest thing in the entire unimaginably-large universe full of exotic stars and black holes and supernovae,…

That strikes me as... a strange claim, considering how fast the OMG particle whizzed by.

Per Wiki:

> The energy of this particle is some 40 million times that of the highest energy protons that have been produced in any terrestrial particle accelerator.

Presumably wherever these extreme energy protons are coming from is rather warm.

Is there some reason to think the LHC has higher temperature?

Not a physicist; could be something like LHC having larger bunch sizes... but since we don’t know what causes these particles, it seems like we don’t really know the source temperature.

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#102
post #95

Is fusion capable of replacing all our energy systems? If it works, is it the energy miracle humanity needs?

There certainly is enough fusion fuel on earth to power humanity at 10 or 100x current consumption until the sun explodes without emitting any CO2. Same can be said for fission, but it only powers 5% of the world due to what can be called complications (even though many scientists insist that it's safe and responsible). Fusion is expected to have fewer complications, but we won't know until we scale up a fleet of fus…

Good answer!

> Same can be said for fission, but it only powers 5% of the world due to what can be called complications

But weren't these complications obvious before deciding to scale up fission power plants?

The ones I know about:

- Radioactive waste

- Risk of failure

- Unavoidable EOL

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#103
Can somebody with more understanding tell me if this idea I had is stupid or has some merit?

Fusion will deliver an incredible amount of energy, making it cheap. Everybody then turns up their energy consumption since it costs nothing. Raise heating in houses, use AC everywhere, longer showers, more transportation, etc.

All this energy eventually becomes heat. Can it get to a threshold where it can influence temperature on a global scale even if it lowers carbon emissions? What am I missing?

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#104

Earlier quoted context omitted.

It seems easy to conflate any or all approaches as fringe when no one's done it yet, and especially if there are political and program-$ecurity concerns overriding doing what's best, but some approaches scream magical thinking with unexplained reasoning more than others (like one or more cold fusion proposals in the early 1980's). OTOH, it seems like ICF and tokamak are the officially-sanctioned dogma and all other a…

Personally, without drawing from rigorous empirical proof that doesn’t exit, I don’t think things like unique IEC approaches are based in fairy tales. Fusion science used to be very tribal and dogma was important. That era has largely passed. Tokamak, stellarator, ps laser, steam machine, whatever. If you can find the money to make it and do the science to show its performance, great. Everyone wants you to do that. T…

The 2015 paper cites 3 other groups with experimental results supporting their claims though.

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#105
post #95

Is fusion capable of replacing all our energy systems? If it works, is it the energy miracle humanity needs?

1. Yes. 2. No, because we already have fission reactors. How many miracles do we need?

> How many miracles do we need?

Right, but humanity won't scale up fission to power everything.

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#106
post #105

Earlier quoted context omitted.

1. Yes. 2. No, because we already have fission reactors. How many miracles do we need?

> How many miracles do we need? Right, but humanity won't scale up fission to power everything.

Why not?

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#107

Can somebody with more understanding tell me if this idea I had is stupid or has some merit? Fusion will deliver an incredible amount of energy, making it cheap. Everybody then turns up their energy consumption since it costs nothing. Raise heating in houses, use AC everywhere, longer showers, more transportation, etc. All this energy eventually becomes heat. Can it get to a threshold where it can influence temperatu…

No the idea has no merit.

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#108

Can somebody with more understanding tell me if this idea I had is stupid or has some merit? Fusion will deliver an incredible amount of energy, making it cheap. Everybody then turns up their energy consumption since it costs nothing. Raise heating in houses, use AC everywhere, longer showers, more transportation, etc. All this energy eventually becomes heat. Can it get to a threshold where it can influence temperatu…

Use free energy to sequester infinite carbon!

Re: Radical hydrogen-boron reactor leapfrogs current nuclear fusion tech?

#109
To shed a different light on this: think of temperature as walking through mud. Your legs lose energy trying to slowly pull a lot of mud behind you. Now think about skiing. A lot less snow is dragged with you but it flies fast.

Here, what is interesting is if one fusion reaction does happen, then the alpha (helium) particles leave at 2.9 MeV. After two collisions with protons, if the second proton they have hit hits in turn a boron nucleus, then it will have exactly the right energy (612 keV) to have maximum chances at initiating a second fusion reaction.

612 keV is like almost 7 billion degrees °C if considered as thermal energy, and no experiment anywhere will get that hot for long. But compared to the energy of the exiting helium nuclei, it's still much lower (0.612 MeV vs 2.9 MeV).

In other words, instead of cascading all the energy down and hoping the sea of particles rises to a few billion degrees so enough particles do fusion to keep the sea of other particles hot, here, the energy is preempted by proton atoms after just 2 collisions and used immediately to start a second reaction, which yields more helium nuclei at 2.9 MeV, essentially producing an "avalanche" effect.

Finally, yes, they seem to have devised a way to obtain at least a small part of the energy electrically, without relying on thermal energy, via direct electric field deceleration of very fast charged particles.

This is like "the ultra rich (very fast particles) manage to create value among themselves without having to cascade their wealth down to the crowd (cold particles), and then upload that value to hyperspace (the electric field from the electrodes), without ever interacting with the mass of the crowd (the mass of the target), until a sufficient amount of fusion reactions have been realized"

The avalanche process is explained in Hora's 2016 publication, with a schematic page 9: https://aip.scitation.org/doi/10.1016/j.mre.2017.05.001

And yes, a petawatt (the energy of present day ultra-fast lasers) is a lot of power. It was just chance that there was very little practical use to this kind of power - until now.

That being said, I am not a true expert myself of this topic, so the true barriers laying in front of this concept might be better explained by the other comments here.

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