Calculate the macroscopic scattering cross section for natural uranium. Given p-18.9 g/cm³, percentage weight of natural uraniumis 0.713; the rest being. The scattering cross sections for 2 and 2 sotopes being 15 b and 13.8b, respectively

To calculate the macroscopic scattering cross section (Σs) for natural uranium, we use the following formula:

Σs = NU235 × σs,U235 + NU238 × σs,U238

Where:

• N is the atomic number density (atoms/cm³)

• σs is the microscopic scattering cross section (in barns, __________ ____ ___ ___ _________ ___ __________ ___ ____.
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