3 ms·I thought Pu-238 was not even fissile.by lutorm 15y agoI thought Pu-238 was not even fissile.maaku 15y agoIt isn't.mchouza 15y agoAll plutonium isotopes can be used to make nuclear weapons [1], though Pu-238 would give big problems to weapon designers due to its intense decay heat. [1] http://cstsp.aaas.org/files/selden.pdf http://cstsp.aaas.org/files/selden.pdf