Question: 2. (30) A cubical reactor with 1m sides is composed of graphite with U-235 randomly impregnated throughout to a density of N235=NC/1000. The reactor power

2. (30) A cubical reactor with 1m sides is composed of

2. (30) A cubical reactor with 1m sides is composed of graphite with U-235 randomly impregnated throughout to a density of N235=NC/1000. The reactor power is 200kW. The number NC=8.31022cm3. (a) Calculate the macroscopic absorption cross-section of the U-235 at thermal energies using the number density of C from Lamarsh. (b) Calculate the diffusion coefficient for carbon. (c) Calculate the diffusion area of the mixture where diffusion area L2= aF+aMD where F is the fuel (U-235) and M is the matrix (carbon). (d) Calculate the geometric buckling of the cubical reactor. (e) Determine the average flux of the reactor using the power level. To help solve, pay attention to units! (f) Determine the total neutron absorption rate in the entire core

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