In the case of Little Boy, the 20 % U-238 in the uranium had 70 spontaneous fissions per second.
32.
All of these decay only through alpha decay, although some unknown bohrium isotopes are predicted to undergo spontaneous fission.
33.
:: ( Spontaneous fission in general is not that uncommon . " Self-sustaining chain reactions " almost never happen.
34.
These include certain types of radioactive decay ( spontaneous fission and neutron emission ), and from certain nuclear reactions.
35.
Naturally occurring technetium occurs as a spontaneous fission product in uranium ore or by neutron capture in molybdenum ores.
36.
According to Gun-type fission weapon, the 20 % U-238 in Little Boy had 70 spontaneous fission events per second.
37.
Results have not been published but preliminary results appear to indicate the observation of spontaneous fission, possibly from 264 Bh.
38.
The known elements most susceptible to spontaneous fission are the synthetic high-atomic-number actinides and transactinides with atomic numbers from 100 onwards.
39.
For spontaneous fission, it is necessary to measure the half-lives for the isotonic nuclei 268 Sg, 270 Hs and 272 Ds.
40.
So, I assume they meant to ask about spontaneous fission . talk ) 19 : 38, 5 April 2016 ( UTC)
