Half a croissant, on a plate, with a sign in front of it saying '50c'
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Solar powered nuclear reaction

Pressure achieved slowly but surely through solar power
 
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The bomb or power-plant starts off without any explosives, simply bringing up the pressure by focused solar heating melting salt.
pashute, Jul 20 2020

Ivy Mike https://en.wikipedia.org/wiki/Ivy_Mike
Loud noise, very far away. [8th of 7, Jul 20 2020]

[link]






       You're never going to build a field-deployable weapon that way; you'll end up with something bigger than the Ivy Mike gadget <link>.   

       As to initiating a fusion reaction for power generation, it will need a fairly big array to collect enough energy to do the job; focusing will B an issue.   

       Might be better just harvesting the energy and feeding it into a conventional fusion reactor to heat the plasma to burn point.
8th of 7, Jul 20 2020
  

       Focusing is not engineered placement, more chucking in finer local direction.
wjt, Jul 24 2020
  
      
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