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Re:Compact nuclear fusion reactor is 'very likely to work,' ... by dehrmann on Wednesday September 30, 2020 @01:50AM (#24636030)
Have you seen this? I'd love to find an updated version, but they've been making exponential progress on it since the 70's.

https://i.imgur.com/BN0pz.png

Re:Compact nuclear fusion reactor is 'very likely to work,' ... by dmurray on Wednesday September 30, 2020 @02:55AM (#24636297)
There's a version of this graph about 18 minutes into the Dennis Whyte talk linked in the top comment, though if I understand it it's measuring "power out per pulse" where your graph has "power out per unit power in".

He says progress stalled in 1995 and is not projected to continue until ITER is built, 10 years from now. Then the rest of the talk is actually about an alternative to ITER.