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by mannykannot 1530 days ago
Devices like tokamaks use powerful electromagnets to compress a plasma. An alternative uses very powerful lasers to explosively vaporize and compress a pellet of fuel. In comparison, this uses the steampunk-esque method of firing a pellet of fuel into a target with a "hypervelocity gas gun".

This is just a press release, but an unusually informative one. For more information on what they have and have not done, see here: https://twitter.com/FLF_Nick/status/1511374600575365122

(Link from apendleton: https://news.ycombinator.com/item?id=30923527)

They have good evidence of deuterium-deuterium fusion. IIRC this is harder to achieve than deuterium-tritium fusion, but as tritium is radioactive with a half-life of ~12 years, it is much harder to acquire and work with. In their concept of a power reactor, they would apparently use the deuterium-tritium reaction, which with the latter being created by bombarding a lithium blanket with the neutrons produced by the reaction, something that is envisaged in most other fusion power concepts.

2 comments

Thanks for the short explanation. That clears things up, and you make the First Light approach sound very cool.
You had me at steampunk