Well, then it'd heat up, release neutrons and fire, when ignited, while being slowly consumed. Just awesome :P
hmmm... well fire seems to "reflect" neutrons currently, but smoke does not. The only way around this would be to make IRAS have a reasonably high burning tempurature, so the fire given off does not transform into smoke and absorb the neutrons.
yeah, good point. I expect that would be the best way around it. And there wil definately be no save issues as you said.
ahh, it seems that all gasses are opaque to neutrons. Either they absorb them or reflect them. So it would be nice if some were transparent to them.
perhaps the lighter gasses like HYGN an OXYG? since it makes sense because in real life their nuclie is small and has a lower chance of being hit by a neutron projectile.
An annoying thing I noticed was that when a gas "absorbes" a NEUT, it doesn't transfer the heat energy.