Question: using one-group diffusion theory and assuming spherical geometry estimate minimal critical masses of bare metal spheres at room temperature for U-233, U-235, and Pu-239

using one-group diffusion theory and assuming spherical geometry estimate minimal critical masses of bare metal spheres at room temperature for U-233, U-235, and Pu-239

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using one-group diffusion theory and assuming spherical geometry estimate minimal critical masses of bare metal spheres

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