Watching "The Dark Knight Rises", Bane announces halfway into the movie at the stadium that what they have is a neutron bomb. But then at the end of the movie there is an actual nuclear explosion shown as if it was a fission bomb. My understanding was that a neutron bomb only releases highly energetic particles like neutrons so that all organic matter is destroyed by the radiation. I thought the point was to keep buildings/cities/material wealth intact so that at first you deploy a neutron bomb, kill the people in the city, wait for radiation to settle down, and then move in and take over the city. So a neutron bomb shouldn't blast like that with the ability to level a city and everything in it. Is a neutron bomb supposed to "explode" like that? Did I have the wrong idea? Or is it just another case of Hollywood getting the physics wrong? How much of an "explosion" is a neutron bomb supposed to have?