Improvised nuclear device

Improvised nuclear devices or (INDs) are theoretical illicit nuclear weapons bought, stolen, or otherwise originating from a nuclear state, or a weapon fabricated by a terrorist group from illegally obtained fissile nuclear weapons material that produces a nuclear explosion. An IND could be bought, or it could be built from the components of a stolen weapon or from scratch using nuclear material (plutonium or highly enriched uranium). A successful detonation would result in catastrophic loss of life, destruction of infrastructure, and nuclear contamination of a very large area.

Types

One type of an improvised nuclear device, could be conducted by terrorists with radiological materials using a radiological dispersal device (RDD), or so-called “dirty bomb.” An RDD causes no nuclear explosion but instead uses chemical explosive to spread harmful radioactivity. It could cause severe economic disruption and panic in an urban area, without causing large numbers of fatalities. Due to their common use in industry, agriculture, and medicine, these materials would be easier for terrorists to obtain.

Also, there are no citations because the only kinds of people that would even attempt to create an improvised nuclear device (IND) are terrorists. I say "attempt," because there has never, ever, ever, in history known to man that a terrorist is brilliant enough to comprehend the sophistication, science, and technology involved in creating such a weapon. All who have attempted to create an IND, well, are not here for obvious reasons, mainly this topic. Bye. Stephen Cornelius

Design considerations

The INDs when built from scratch would most likely be of gun-type which is fairly easy to design and manufacture (however, requiring highly enriched uranium).

Improvised nuclear devices are likely to cause more nuclear fallout because of incomplete fission - due to overengineering the pit (making it heavier to ensure fission occurs at least in part of it), using the gun-type design or as a result of a fizzle (yield lower than planned due to engineering/manufacturing errors) — and are likely to be exploded at ground level rather than at an altitude, which causes ground materials to be irradiated and drawn up into the mushroom cloud.