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A comment on Successful second round of fusion experiments with Wendelstein 7-X. Parent comment

Re:Successful second round of fusion experiments with Wendel... by londons_explore on Tuesday November 27, 2018 @07:37AM (#18541810)
Those videos show surprising 'hotspot' lines - I would expect the plasma to be far more evenly distributed.
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Re:Successful second round of fusion experiments with Wendel... by lambdadmitry on Wednesday November 28, 2018 @12:00PM (#18553196)
Because really hot plasma doesn't emit in visible range, it's all x-ray, so what you are seeing is it's (relatively) cool edge. It might have colder regions, but that doesn't necessarily mean that the main volume is unstable.
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