Word Count : 342

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To calculate the macroscopic scattering cross-section (\(\Sigma_s\)) for natural uranium, we use the formula: \[ \Sigma_s = N \sigma_s \] where: - \( N \) is the number density of uranium atoms (\(\text{atoms/cm}^3\)), - \( \sigma_s \) is the microscopic scattering cross-section (\(\text{barns}\), where \( 1 \text{ b} = 10^{-24} \text{ cm}^2 \)). ### Step 1: Determine _______ _____ __________ __________ _________ ___ _______ __________.
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