Thanks U-238. Nice nick in this context, too. :’)
This is a cool concept, however, it still suffers from a major problem: terrorists can accumulate a large collection of them, and then build dirty bombs. Dirty bombs really suck, since they don’t rely on a chain reaction, but conventional explosives to turn their radioactive payload into a aerosol.
No way our government would ever allow such technology anywhere, and the environmentalists would have hissy fits!