I found this particularly to be a very awesome weapon, I should thank kixeye for it, it's very cool...
Sorry to waste time BUT....
This is it
The neutron driver absorbs passive Ionizing radiation (which is every where in space) and forming a dense cluster of neutrons from the radiation
And firing those neutrons with a gravimetric shock wave
But wait there's more
The neutron driver can possibly be built to produce its own neutrons with fission techniques, but compared to today, the fission techniques would need to be massively improved...
Clearly not uranium-236 (only **** out 2 neutrons)
And the only reason the cluster **** of neutrons and falling apple disease
Is blue is simply because, it absorbs the colour from the neutron drivers innards
Even when leaving the barrel it should turn, suggestively... a dark grey colour
This post feels flawed, as if I missed something... meh