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
Just a note.
No bomb is 100% fusion. You need a fission reaction to start the fusion reaction. Most bombs aim for a 50/50 fission/fusion mix. Even then, only about 30-40% of the material is actually consumed by either reaction.
And that material that isn’t used up has to go *somewhere*. Which means some amount of fallout from the bomb itself. Now, a bomb can also turn debris in the area radioactive, and that can get sucked up into the atmosphere and also become fallout. Although with a fairly short half-life compared to the material ejected from the bomb itself. But, either way, it is not good to be around it.
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