I’ve heard people say there is no fallout, but there typically is a fission bomb in the secondary stage. Where does its radiation go? Is it just blown away by the fusion bomb so it’s no longer as deadly? Isn’t it still there though? Is it just weaker?
In: Physics
Yes, absolutely. A hydrogen bomb is just a regular fission bomb with extra stuff (the fusion secondary), and the point of the extra stuff is mostly to generate a lot more neutrons to trigger even more fission in the fission core. The fission of U235 is what produces Cs-137 which is the most dangerous fallout product from a nuclear bomb, and a fusion bomb just produces more U235 fission than a fission bomb would on its own.
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