aNAla,AlNSia,Si5.64 x 1022atomscm30.23 x 1024 cm22.85 x 1021atomscm30.16 x 1024 cm20.0134 cm1sNAls,AlNSis,Si5.64 x 1022atomscm31.49 x 1024 cm22.85 x 1021atomscm32.20 x 1024 cm20.0903 cm1a1a10.01345 cm174.3 cms1s10.0903 cm111.1 cmDOE-HDBK-1019/1-93Reactor Theory (Neutron Characteristics)NUCLEAR CROSS SECTIONS AND NEUTRON FLUXRev. 0Page 13NP-02Step 2:The macroscopic cross sections for absorption and scattering arecalculated using Equation (2-4).Step 3:The mean free paths are calculated by inserting the macroscopic crosssections calculated above into Equation (2-3).Thus, a neutron must travel an average of 74.3 cm to interact by absorption in this alloy, but itmust travel only 11.1 cm to interact by scattering.
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business