In reply to Jed Rothwell's message of Fri, 22 Jun 2018 10:08:41 -0400: Hi, [snip] >AM <mix...@bigpond.com> wrote: > >If all the fission energy in 20 lb. of Pu239 were released it would be over >> 175000 tons of TNT. >> > >I do not think it is possible to release all of the energy from the fission >explosion fuel. > > > >> If the bomb only yields 20 tons it is incredibly inefficient. I would >> expect >> more like 20000 tons. >> > >I think that was deliberate. They did not want a big explosion because the >rocket only flew a few miles. Modern fusion bombs have variable yield >("dial-a-yield") meaning they waste fuel at the lower yields.
1) I was trying to imply that the "20 tons" may have been a typo. 2) You have switched from fission to fusion. 3) Even if the 20 tons figure was correct, and deliberate, it would leave nearly all the Pu239 intact, implying quite a radioactive mess spread around the environment and into the air, just 20 miles away. I wouldn't want to be downwind of that. > >- Jed Regards, Robin van Spaandonk local asymmetry = temporary success