I’m no nuclear physicist (only a climate/math physicist), so I had to look it up. If a helium-4 nucleus were to absorb a fission neutron, it looks like it would

I’m no nuclear physicist (only a climate/math physicist), so I had to look it up. If a helium-4 nucleus were to absorb a fission neutron, it looks like it would transmute to helium-5, which has a half-time of 602 ys (yoctoseconds), and decays by neutron emission[0]. So pretty much status quo. For context, in 602 ys, light travels a distance equivalent to around a hundredth of an atom width, so it’s a rather short moment. [0]: https://en.wikipedia.org/wiki/Isotopes_of_helium https://en.wikipedia.org/wiki/Isotopes_of_helium