CoQ_10 on Nostr: I thought that all the primaries used plutonium. Smaller critical mass, which is ...

I thought that all the primaries used plutonium. Smaller critical mass, which is important in modern warheads. Also, I think the secondary uses lithium deuteride, not tritium. Tritium would be injected into the core of the primary to increase initial neutron production and make the fission reaction more efficient.