a Consider a slab of non-multiplying material of thickness a containing a uniformly distributed neutron source ie a a S(x)=S, - sxs+ S and boundary conditions: 0(+)=0 Determine the neutron flux in the slab that satisfies the diffusion equation d -D 3+EP(x)= S(x) dx Note: the solution to an inhomogeneous differential equation is the sum of solutions to the homogeneous equation plus a particular solution. Try a constant for the particular solution