On Tuesday, July 31, 2018 at 11:08:29 AM UTC-5, David Ellis wrote:   
   > It just dawned on me, though, that I think your point is that the surface   
   area vs volume question is the key.  Is that correct?  That the larger your   
   reactor is (and thus, the larger your ball of plasma is) the more energy you   
   have "trapped" in the    
   plasma to increase total fusion power   
      
   There you go. Now you are getting it.    
      
   > I imagine this isn't entirely true in the case of direct energy conversion,   
   where the reactor isn't relying solely on radiated power, and is instead using   
   magnetic fields to tap off the kinetic energy of charged particles zipping   
   around the torus.   
      
   You don't take away the kinetic energy of charged particles that are still   
   zipping around the torus. You divert some percent of them to a different path   
   in which you can then attempt your direct conversion.   
      
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