Is constructing a device capable of sustaining a chain reaction all that difficult though? We did it in the 40's with a big pile of uranium and some graphite. Could an external thermal neutron source allow you to reduce the size even further? I don't think it will be long before some idiot on youtube creates one in his backyard. There are already communities of folks playing with fusors, which can produce neutrons capable of activating nearby materials.
We've all heard of the radioactive boy scout, and he figured out what he did without youtube and ebay.
Is constructing a device capable of sustaining a chain reaction all that difficult though? We did it in the 40's with a big pile of uranium and some graphite. Could an external thermal neutron source allow you to reduce the size even further? I don't think it will be long before some idiot on youtube creates one in his backyard. There are already communities of folks playing with fusors, which can produce neutrons capable of activating nearby materials.
We've all heard of the radioactive boy scout, and he figured out what he did without youtube and ebay.