this post was submitted on 30 Nov 2025
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(page 6) 38 comments
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Boiling water, all the way down. Somebody get the loose leaf

[–] brucethemoose@lemmy.world 1 points 1 week ago (5 children)

I just realized…

I don’t like fusion.

They say it’s clean, but 14.1 MeV neutrons are no joke.

https://en.wikipedia.org/wiki/Neutron_temperature#Fast

14.1 MeV neutrons have about 10 times as much energy as fission neutrons, and they are very effective at fissioning even non-fissile heavy nuclei. These high-energy fissions also produce more neutrons on average than fissions by lower-energy neutrons. D–T fusion neutron sources, such as proposed tokamak power reactors, are therefore useful for transmutation of transuranic waste. 14.1 MeV neutrons can also produce neutrons by knocking them loose from nuclei.

On the other hand, these very high-energy neutrons are less likely to simply be captured without causing fission or spallation. For these reasons, nuclear weapon design extensively uses D–T fusion 14.1 MeV neutrons to cause more fission. Fusion neutrons are able to cause fission in ordinarily non-fissile materials, such as depleted uranium (uranium-238), and these materials have been used in the jackets of thermonuclear weapons. Fusion neutrons also can cause fission in substances that are unsuitable or difficult to make into primary fission bombs, such as reactor grade plutonium. This physical fact thus causes ordinary non-weapons grade materials to become of concern in certain nuclear proliferation discussions and treaties.

How are reaction chambers supposed to deal with that? It’s not very sustainable if the whole assembly breaks down and turns radioactive over time.

[–] REDACTED 1 points 1 week ago

I'm sure there is a good reason why fission has always been "5-10 years till it's ready"

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[–] nectar45@lemmy.zip 1 points 1 week ago

Maybe nuclear fusion isnt worth it after all

[–] Dionysus@leminal.space 1 points 1 week ago

That's why room temperature and cold fusion are so important. Duh!

[–] ShaggySnacks@lemmy.myserv.one 1 points 1 week ago

In the 50s humanity succesfilly split the atom for peaceful purposes, bu useable energy was still produced by turning water to steam to spin a good old-fashioned turbine. In the 70s, after the discovery of teh Dome, a storm of technological wonders rained down. In particular, a completely new type of reactor was created. How does it work? Well, take some hephasitum, a rare Forefathers material that produces heat in the prescence of alcohol, and use it....turn good old-fashioned turbine.

Technologies Under the Dome magazine.

[–] Adalast@lemmy.world 0 points 1 week ago (1 children)

Looks like literally nobody brought it up, so here goes... The Alternative: Helion Great YouTube video on the topic (Helion is at 6 minutes)

[–] Adalast@lemmy.world 1 points 1 week ago

No idea why I am getting down voted. Helion's tech is a great alternative to steam for generating electricity from fusion reactions.

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