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That article is quite outdated, JET has 2020 D-T campaign.

More importantly, fusion is a thousand times better than fission with respect to waste.

No one is claiming there is no waste at all, but tritium has a half-life of 12.5 years so most of the waste will be safe within a few decades. The rest will largely be neutron embrittled steels/materials (classified as low level nuclear waste) that is easily stored.

Compare and contrast that to nuclear fission which generates high level waste, spent nuclear fuel rods and radioactive liquid which must be painstakingly petrified and processed before safe storage. Even then this waste will still be dangerous for over 100,000 years.



So the waste output/power output is 1000 times better? Any sources pls?

And this "Neutron embrittlement" does not create any dangerous long-lived isotopes? Like, we just wait few years and then normally landfill the concrete or how should I imagine the process?


Fission creates neutron embrittled materials and steels as well. And yes we tend to store them until they can be safely disposed.

Again, the main difference is the fuel. Tritium is safe in a few decades, spent uranium is safe in a few hundred thousand years.


Fusion creates much less long term radioactivity.

However, the mass of material contaminated with radioactivity is very high, since the radioactivity that is created is not concentrated in fuel elements, as it is in a fission reactor.




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