From: marsh@panix.com   
      
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   On Tue, 2 Feb 2021, dumpster4@hotmail.com wrote:   
      
   How radioactive is the exhaust?   
      
   > The next big thing in space propulsion?:   
   >   
   > "Our solar system just became a little bit smaller due to a new   
   > plasma propulsion concept developed by the U.S. Department of   
   > Energy’s Principal Research Physicist, Dr. Fatima Ebrahimi. Her   
   > new engine uses plasmoids and magnetic fields to generate thrust,   
   > making crewed missions to distant planets, such as Mars,   
   > significantly more manageable and less costly."   
   >   
   > "“The idea for this thruster comes from my simulations of helicity   
   > injection in the [National Spherical Torus Experiment] NSTX fusion   
   > experiment in Princeton, a technique used to create the initial   
   > plasma current in a Tokamak [fusion reactor]. My simulations showed   
   > these plasma rings called plasmoids are being created and moving at   
   > very high speed,” Dr. Ebrahimi explained.   
   >   
   > According to computer simulations run by the Princeton Plasma Physics   
   Laboratory   
   > and the National Energy Research Scientific Computing Center at the Lawrence   
   > Berkeley National Laboratory in Berkeley, California, her thruster concept   
   > produced exhaust velocities that are ten times greater than a traditional ion   
   > propulsion system with heart-stopping speeds at hundreds of kilometers per   
   > second."   
   >   
   > See:   
   >   
   > https://thedebrief.org/fusionpropulsion/   
   >   
   >   
      
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