neutron simulation in Geant 4

weiwill

Dear all,

I just started using geant 4 to simulate neutron transport in the air considering three different types of collisions: elastic collision, inelastic collision, and neutron capture.
Is there any similar examples in Geant 4 that I can refer to and play with?
I know this is not a so hard code. Basically I can build a cylinder containing only air. Then for the physics processes of neutron, I need to add elastic, inelastic, and neutron capture.
If you happens to do similar work or you are good at Geant 4, would you please share some experience?

Thank you.