Radiological Weapons are mainly known an 'poor mans','nucleur bomb'.A radiological weapon or radiological dispersion device (RDD) is any weapon that is designed to spread radioactive material with the intent to kill, and cause disruption upon a city or nation.
It is primarily known as a dirty bomb or "salted bomb" because it is not a true nuclear weapon and does not yield the same explosive power. It uses conventional explosives to spread radioactive material, most commonly the spent fuels from nuclear power plants or radioactive medical waste.