Hello everyone. I have a problem I can't figure out.(adsbygoogle = window.adsbygoogle || []).push({});

Let's say that we start off with UO2 fuel. Knowing the density (and enrichment) we can calculate the number densities of the constituents (i.e. U-238, U-235, U-234, O-16). Suppose now that the fuel is burned to a certain exposure. A lattice code (for instance CASMO) can calculate the mixed number densities (MND). Suppose that I wanted to check this calculation backwards - given that I know the number of oxygen atoms doesn't change it should be possible. I just can't figure out how to do it.

Does anyone know how to do it? It really would help me alot!

//Ulrik

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# Atomic number density and mass density

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