From: btrosko@panix.com   
      
   Toprope  wrote:   
      
   > What about making a large magnetic field by creating a large cage   
   > around the ship? Doesn't use much mass and you get a large field. But   
   > it would need to be strong enough to maintain shape while the ship   
   > accelerates. A large magnetic field could use little energy to deflect   
   > radiation and create a radiation free area.   
      
   Won't effect neutrons, won't deflect high-energy photons.  High-energy   
   photons hit the ship, you get a cascade of other high-energy particles.   
      
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