From: snidely.too@gmail.com   
      
   On Thursday, William Elliot queried:   
   > On Wed, 3 Feb 2021, Alain Fournier wrote:   
   >   
   >> My understanding is that the exhaust is not radioactive at all. I   
   >> don't think it is a nuclear propulsion system. They just accelerate a   
   >> plasma the way they do it when they start up a Tokamak. In the   
   >> Tokamak, the plasma moves at very high speeds before initiating   
   >> nuclear reactions.   
   >>   
   >> Think of it as a novel way to make an ion drive.   
   >   
   > As Tokamaks do get radioative upon ussage, I doubt that exhaust isn't   
   > radioactive.   
      
   Tokamaks require the plasma to be contained to reach the pressures for   
   fusion, and they are still working on getting enough pressure for long   
   enough to claim sustained fusion.  They are still building the   
   structures (as an international project) for ITER.  There have been   
   recent photos, looking a lot like the stacking photos for SLS.   
      
   /dps   
      
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