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by amluto 1139 days ago
Electron capture by a nucleus is a thing, but as far as I know, this only happens to any significant extent to unstable nuclei that naturally decay that way. It’s probably possible for a high enough energy electron to hit a stable nucleus and convert a proton to a neutron, but I’ve never heard of it (although I’m not an expert). So I don’t think anyone needs to worry about this.