this post was submitted on 30 Nov 2025
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[–] very_well_lost@lemmy.world 3 points 6 hours ago

Fusion neutrons are able to cause fission in ordinarily non-fissile materials, such as depleted uranium (uranium-238), and these materials have been used in the jackets of thermonuclear weapons.

Fun(?) fact: something like 50% of the energy output of thermonuclear bombs comes from secondary fission events in the bomb casing triggered by the high energy neutron flux of the fusion reaction.