5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
A maximum of 20 energies 0.15 MeV...10 MeV and 8 shield layers can be processed. Mass attenuation coefficients for the following 24 elements and 3 materials are included: H, Be, C, N, O, Na, Mg, Al, Si, P, S, A, K, Ca, Fe, Cu, Mo, Sn, I, W, Pt, Tl, Pb, U, air, water, concrete. A maximum of 5 compositions of up to 10 of these elements may be specified.
The number of integration points is fixed to 8 in each dimension and may not be adequate for extreme configurations. The distance from radial detector to source surface must exceed 25% of the source radius.