A 1.6x10^9 p/s point source of Po210-Be source of 4.5 MeV is stored behind a X cm of paraffin, the dose equivalent rate is not to exceed 0.10 mSvh-1h at a distance of 1m. What is the X cm needed to satisfy the requirement?

USE MCNP6.2 and:

Try implementing variance reduction techniques to your problem to improve the statistics

Plot the neutron flux profile and the cross-section profile inside the paraffin shielding.

Do the problem using two different materials of choice for shielding to have the same dose equivalent at 1m.