Did the Little Boy bomb only fission 0.7% of its uranium?

Question
Mudassir Ali 9 months 1 Answer 99 views

Answer ( 1 )

  1. Using other fission equation with MeV/fission and weight it can be calculated that 1kg perfect fission yield from U-235 is 17 kt/kg.

    In the bomb was on 84,5% U235 which meant 61.5 kg critical mass. Just for sure used 64 kg.

    The later estimated yield was 16 kt.

    16kt / (64* 17 kt/kg) = 1.5%.

    64*0,015 = 960 g

    That was the mass which participated in fission.

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