From: alain245@videotron.ca   
      
   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.   
      
      
   Alain Fournier   
      
   On Feb/3/2021 at 04:25, William Elliot wrote :   
   > 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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