1 Ls 2 2.5 3 a s 6 7 80.1 Ss 2 2.5 3 a s 6 789 ENERGY FLUX 1.38 a vt 00 1.3 * Ol Ls 2 2.5 83 a Ss 6 7 BD | 1s s ENERGY 2 a5 3 a S53 6 7280801 (MeV) Figure 14. Differential energy spectra of the scattered energy flux at 1 and 100 meters for a .662 MeV source (+97 es) . - 48 -