Most people don't know that Plutonium is actually a naturally occurring element and nuclear reactors are natural and organic. Or at least the Oklo Reactor is http://en.m.wikipedia.org/wiki/Natural_nuclear_fission_reactor
Uranium 235 is what's normally found in nuclear bombs but if you start with say plutonium 239 and add some tritium (hydrogen 3) and lithium 6 the temperatures will be so hot and with the added neutrons from the h3 you can get uranium 238 to fission. Of course at that stage it wouldn't really be uranium 238.
Uranium 235 is what's normally found in nuclear bombs but if you start with say plutonium 239 and add some tritium (hydrogen 3) and lithium 6 the temperatures will be so hot and with the added neutrons from the h3 you can get uranium 238 to fission. Of course at that stage it wouldn't really be uranium 238.